WO2015109449A1 - 确定拉曼光放大器的增益的方法、装置和拉曼光放大器 - Google Patents

确定拉曼光放大器的增益的方法、装置和拉曼光放大器 Download PDF

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Publication number
WO2015109449A1
WO2015109449A1 PCT/CN2014/071071 CN2014071071W WO2015109449A1 WO 2015109449 A1 WO2015109449 A1 WO 2015109449A1 CN 2014071071 W CN2014071071 W CN 2014071071W WO 2015109449 A1 WO2015109449 A1 WO 2015109449A1
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Prior art keywords
optical amplifier
gain
raman optical
power
pump
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PCT/CN2014/071071
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English (en)
French (fr)
Inventor
黄延穗
周恩波
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2014/071071 priority Critical patent/WO2015109449A1/zh
Priority to CN201480000281.9A priority patent/CN105122682B/zh
Priority to EP14879916.6A priority patent/EP3098980B1/en
Publication of WO2015109449A1 publication Critical patent/WO2015109449A1/zh
Priority to US15/216,415 priority patent/US9768582B2/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1301—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers
    • H01S3/1302—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers by all-optical means, e.g. gain-clamping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1301—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers
    • H01S3/13013—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers by controlling the optical pumping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1305—Feedback control systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1306—Stabilisation of the amplitude
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/131—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
    • H01S3/1312—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/30—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
    • H04B10/2916—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing using Raman or Brillouin amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/293—Signal power control
    • H04B10/2931—Signal power control using AGC
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S2301/00—Functional characteristics
    • H01S2301/02—ASE (amplified spontaneous emission), noise; Reduction thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094096—Multi-wavelength pumping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/30—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects
    • H01S3/302—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects in an optical fibre

Definitions

  • the present invention relates to the field of communications, and more particularly to a method, apparatus and Raman optical amplifier for determining the gain of a Raman optical amplifier in the field of communications. Background technique
  • the Raman optical amplifier is an optical amplifier based on the Raman effect.
  • the so-called Raman effect means that when a weak light and a strong light enter the fiber simultaneously (in the same direction or in the opposite direction), if the spectrum of the weak light is within the range of the Raman gain spectrum of the strong light, then it is strong. The energy of light is transferred to the weak light, which causes the weak light to be amplified.
  • the signal light can be amplified based on the Raman effect, so that the transmission distance of the signal light can be increased.
  • the transmission channel distribution changes, for example, the number of transmission channels increases or decreases; for example, the number of transmission channels does not change but each transmission channel is The distribution in the spectral space changes, etc., and the change in the distribution of the transmission channel causes the gain of the Raman optical amplifier to change.
  • the drive current or drive voltage of the pump source may be changed, which may cause the power of the pump light to change, which may also cause the gain of the Raman optical amplifier to change. This change in the gain of the output signal light can accumulate in the cascaded link and can cause the link to fail, so this change in gain needs to be monitored in the communication network.
  • Embodiments of the present invention provide a method, apparatus, and Raman optical amplifier for determining a gain of a Raman optical amplifier, which can accurately determine a gain of a Raman optical amplifier, thereby avoiding a change in gain of a Raman optical amplifier.
  • the communication network is faulty.
  • a method for determining a gain of a Raman optical amplifier comprising: acquiring current gain parameter information of a Raman optical amplifier, the current gain parameter information comprising: out-of-band amplification of the Raman optical amplifier Radiating ASE noise power information, pump optical power information of at least one pump source of the Raman optical amplifier, and output signal power information of the Raman optical amplifier;
  • the current gain of the monitoring channel of the Raman optical amplifier is determined according to the current gain parameter information and the correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information.
  • the out-of-band amplified spontaneous emission ASE noise power information includes short-band out-of-band ASE noise power, long-band out-of-band ASE noise power, and out-of-band ASE noise. At least one of total power; pump optical power information of the at least one pump source including a driving voltage of the at least one pump source, a driving current of the at least one pump source, and a pump output by the at least one pump source At least one of the power of Puguang.
  • the out-of-band amplified spontaneous emission ASE noise power information includes a short-band out-of-band ASE noise power and a long-band out-of-band ASE noise power;
  • the at least one pump The pump optical power information of the Pu source includes the power of the pump light output by the at least one pump source; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, the at least one
  • Each combination of the power of the pump light output by the pump source and the output signal power information corresponds to a gain of the channel.
  • the out-of-band amplified spontaneous emission ASE noise power information includes a short-band out-of-band ASE noise power and a long-band out-of-band ASE noise power;
  • the at least one pump The pump optical power information of the Pu source includes a driving voltage of the at least one pump source; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, and the at least one pump source
  • Each combination of drive voltage and output signal power information should monitor one gain of the channel.
  • the out-of-band amplified spontaneous emission ASE noise power information includes a short-band out-of-band ASE noise power and a long-band out-of-band ASE noise power;
  • the at least one pump The pump optical power information of the Puyuan includes a driving current of the at least one pump source; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, and the at least one pump source
  • Each combination of drive current and output signal power information should monitor one gain of the channel.
  • the method further includes: A pump optical power of the at least one pump source of the Raman optical amplifier is controlled to adjust a gain of the monitoring channel of the Raman optical amplifier to a target gain.
  • the controlling the pump power of the at least one pump source of the Raman optical amplifier comprises: Determining a magnitude relationship between a current gain of the monitoring channel of the Raman optical amplifier and the target gain; reducing a pump optical power of the at least one pump source when the current gain of the monitoring channel is greater than the target gain; or The pump light power of the at least one pump source is increased when the current gain of the monitoring channel is less than the target gain.
  • the method further includes: Before determining the current gain of the monitoring channel of the Raman optical amplifier, establishing a correspondence between gain and gain parameter information of at least one monitoring channel including the monitoring channel.
  • the at least one monitoring channel includes an output power peak and/or an output power valley with the Raman optical amplifier The corresponding transmission channel.
  • an apparatus for determining a gain of a Raman optical amplifier comprising: a receiving component for receiving information, the receiving component having at least one input port; and a processing component coupled to the receiving component, wherein The processing component is configured to: acquire current gain parameter information of the Raman optical amplifier, where the current gain parameter information includes: out-of-band amplified spontaneous emission ASE noise power information of the Raman optical amplifier, at least one pump of the Raman optical amplifier The pump optical power information of the Puyuan and the output signal power information of the Raman optical amplifier; determining the current gain parameter information and the correspondence between the gain and the gain parameter information of the monitoring channel of the Raman optical amplifier The current gain of this monitoring channel of the Raman optical amplifier.
  • the out-of-band amplified spontaneous emission ASE noise power information includes short-band out-of-band ASE noise power, long-band out-of-band ASE noise power, and out-of-band ASE noise. At least one of total power; pump optical power information of the at least one pump source including a driving voltage of the at least one pump source, a driving current of the at least one pump source, and a pump output by the at least one pump source At least one of the power of Puguang.
  • the out-of-band amplified spontaneous emission ASE noise power information includes a short-band out-of-band ASE noise power and a long-band out-of-band ASE noise power;
  • the at least one pump The pump optical power information of the Pu source includes the power of the pump light output by the at least one pump source; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, the at least one
  • Each combination of the power of the pump light output by the pump source and the output signal power information corresponds to a gain of the channel.
  • the out-of-band amplification includes a short-band out-of-band ASE noise power and a long-band out-of-band ASE noise power;
  • the pump optical power information of the at least one pump source includes a driving voltage of the at least one pump source;
  • Each combination of the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, the drive voltage of the at least one pump source, and the output signal power information corresponds to a gain of the channel.
  • the out-of-band amplified spontaneous emission ASE noise power information includes a short-band out-of-band ASE noise power and a long-band out-of-band ASE noise power;
  • the at least one pump The pump optical power information of the Puyuan includes a driving current of the at least one pump source; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, and the at least one pump source
  • Each combination of drive current and output signal power information should monitor one gain of the channel.
  • the processing component is further configured to: : adjusting the gain of the monitoring channel of the Raman optical amplifier to a target gain by controlling the pumping light power of the at least one pump source of the Raman optical amplifier.
  • the processing component controls a pump optical power of the at least one pump source of the Raman optical amplifier, specifically The method includes: determining a magnitude relationship between a current gain of the monitoring channel of the Raman optical amplifier and the target gain; and decreasing a pump of the at least one pump source when the determined current gain of the monitoring channel is greater than the target gain Optical power; or increasing the pump light power of the at least one pump source when the determined current gain of the monitoring channel is less than the target gain.
  • the processing component is further configured to: : establishing a correspondence between gain and gain parameter information of the at least one monitoring channel including the monitoring channel before determining the current gain of the monitoring channel of the Raman optical amplifier.
  • the at least one monitoring channel includes an output power peak and/or an output power valley with the Raman optical amplifier The corresponding transmission channel.
  • the device further includes: An output port for outputting a driving voltage to at least one pump source of the Raman optical amplifier Or driving current; wherein the processing component comprises: a memory and a processor, the memory is configured to store an instruction and the corresponding relationship, and the processor is configured to execute the instruction stored by the memory.
  • the apparatus is used for determining A device for the gain of a backward Raman optical amplifier.
  • a Raman optical amplifier comprising: means for determining a gain of a Raman optical amplifier according to an embodiment of the invention; and for pumping the Raman optical amplifier At least one pump source, wherein the device comprises: a receiving component for receiving information, the receiving component having at least one input port; and a processing component coupled to the receiving component, wherein the processing component is configured to: Current gain parameter information of the MN optical amplifier, the current gain parameter information includes: out-of-band amplified spontaneous emission ASE noise power information of the Raman optical amplifier, pump optical power information of at least one pump source of the Raman optical amplifier, and Output signal power information of the Raman optical amplifier; determining the monitoring channel of the Raman optical amplifier according to the obtained current gain parameter information and the correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information Current gain.
  • the Raman optical amplifier further includes: a coupler, configured to couple the pump light output by the at least one pump source to the Raman light An input fiber of the amplifier; a wavelength selector for obtaining out-of-band amplified spontaneous emission ASE noise of the Raman optical amplifier; a first photodetector for converting the out-of-band ASE noise into a first electrical signal, and The first electrical signal is input to the processing component of the device; the second photodetector is configured to convert the output signal of the Raman optical amplifier into a second electrical signal, and input the second electrical signal to the device Processing parts.
  • the Raman optical amplifier further includes: at least one optical splitter and a third photodetector; Wherein the at least one optical splitter is configured to split the pump light output by the at least one pump source into two parts, a part of the pump light is input to the input optical fiber of the Raman optical amplifier; and another part of the pump light is input to the third photoelectric a third photodetector for converting the received optical signal into a third electrical signal and inputting the third electrical signal to the processing component of the device.
  • a method, a device, and a Raman optical amplifier for determining a gain of a Raman optical amplifier acquire real-time gain parameter information of a Raman optical amplifier in real time during operation of a communication network, and according to the current gain Parameter information, and monitoring channel of the Raman optical amplifier The correspondence between the gain and the gain parameter information determines the current gain of the monitoring channel.
  • the current gain parameter information includes out-of-band ASE noise power information of the Raman optical amplifier, pump optical power information of at least one pump source, and output signal power information
  • the optical amplifier can accurately determine the current gain of the monitoring channel, thereby accurately monitoring the gain spectrum of the Raman optical amplifier, and accurately adjusting the gain of the Raman optical amplifier to the target gain, thereby avoiding the Raman optical amplifier
  • the communication network is faulty due to the change in gain, and can improve the performance of the Raman optical amplifier and further improve the transmission performance of the communication network.
  • FIG. 1 is a schematic block diagram of an application scenario of an embodiment of the present invention.
  • FIG. 2 is a schematic flow diagram of a method of determining the gain of a Raman optical amplifier, in accordance with an embodiment of the present invention.
  • FIG. 3 is a schematic block diagram of another application scenario of an embodiment of the present invention.
  • FIG. 4 is another schematic flow chart of a method of determining the gain of a Raman optical amplifier in accordance with an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a gain spectrum of a Raman optical amplifier in accordance with an embodiment of the present invention.
  • Fig. 6 is a schematic diagram showing a simulation result of determining the gain of a Raman optical amplifier according to an embodiment of the present invention.
  • Figure 7 is still another schematic flow chart of a method of determining the gain of a Raman optical amplifier in accordance with an embodiment of the present invention.
  • Figure 8 is a schematic block diagram of an apparatus for determining the gain of a Raman optical amplifier in accordance with an embodiment of the present invention.
  • Figure 9 is another schematic block diagram of an apparatus for determining the gain of a Raman optical amplifier in accordance with an embodiment of the present invention.
  • Figure 10 is a schematic block diagram of a Raman optical amplifier in accordance with an embodiment of the present invention.
  • FIG. 11 is another schematic block diagram of a Raman optical amplifier in accordance with an embodiment of the present invention.
  • Figure 12 is still another schematic block diagram of an apparatus for determining the gain of a Raman optical amplifier, in accordance with an embodiment of the present invention. detailed description
  • FIG. 1 is a schematic block diagram of an application scenario of an embodiment of the present invention.
  • the input signal is amplified by the Raman optical amplifier 10, and the Raman optical amplifier 10 may include a pump source 11 and a controller 12 for outputting pump light.
  • the controller 12 is for controlling the drive current or the drive voltage of the pump source 11, thereby controlling the power of the pump light output by the pump source 12.
  • the Raman optical amplifier can utilize the transmission fiber in the link as the gain medium. Therefore, the Raman optical amplifier can be made into a distributed amplifier, and the optical amplifier only needs to include the pump light and the control system, and the signal light can be amplified by the transmission fiber.
  • the Raman optical amplifier is pumped with a plurality of pump light of different wavelengths at the same time, a gain spectrum can be obtained; and by controlling the pump power of each pump light, it can be obtained in a wide range. Flatness 4 ⁇ good gain spectrum.
  • one fiber typically transmits 40 or 80 optical signals simultaneously.
  • the transmission channel distribution changes, for example, the number of transmission channels increases or decreases; for example, the number of transmission channels does not change but each transmission channel is The case where the distribution in the spectrum space changes, and the like.
  • the signals of the 20 transmission channels no longer pass through a certain span, then the number of channels for transmitting the signal light across the segment is from the original 80 channels. Reduce to 60 roads.
  • the input power of the optical signal of each transmission channel is unchanged, but the number of transmission channels is reduced, so the total power of the input signal light is correspondingly reduced, so that the input signal light is pumped to the pump light.
  • the extracted energy is reduced and the power of the remaining pump light in the link is increased, and the energy of the pump light is more concentratedly distributed to the remaining signal light, thereby causing the remaining signal light to be received in the link.
  • the gain will increase.
  • the reduction in the number of transmission channels leads to loss
  • the gain of the outgoing signal light increases.
  • the increase in the number of transmission channels results in a decrease in the gain of the signal light at the output.
  • the change in the power of the pump light output from the pump source also causes the gain of the Raman optical amplifier to change.
  • This change in gain can accumulate in the cascade link and can cause the link to fail. Therefore, it is necessary to determine and monitor the gain variation of the Raman optical amplifier in the communication system, thereby suppressing the dynamic change of the gain. Improve the transmission performance of the communication network.
  • FIG. 2 shows a schematic flow diagram of a method 100 of determining the gain of a Raman optical amplifier, which may be performed by a device that determines the gain of a Raman optical amplifier, for example, the device may be Raman, in accordance with an embodiment of the present invention.
  • the optical amplifier, or the device may also be a gain controller or the like disposed inside the Raman optical amplifier, such as the controller 12 shown in FIG. As shown in FIG.
  • the method 100 includes: S110: Acquire current gain parameter information of a Raman optical amplifier, where the current gain parameter information includes: an out-of-band amplification self-emission of the Raman optical amplifier (Amplified Spontaneous Emission) "ASE") noise power information, pump optical power information of at least one pump source of the Raman optical amplifier, and output signal power information of the Raman optical amplifier;
  • the current gain parameter information includes: an out-of-band amplification self-emission of the Raman optical amplifier (Amplified Spontaneous Emission) "ASE") noise power information, pump optical power information of at least one pump source of the Raman optical amplifier, and output signal power information of the Raman optical amplifier;
  • the device for determining the gain of the Raman optical amplifier can first acquire the Raman optical amplifier in real time. Out-of-band ASE noise power information, pump optical power information of at least one pump source of the Raman optical amplifier, and power information of an output signal of the Raman optical amplifier; and then, determining a gain of the Raman optical amplifier Determining the current gain of the monitoring channel of the Raman optical amplifier with current gain parameter information based on a preset or newly established or acquired correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information
  • the gain spectrum of the Raman optical amplifier can be accurately monitored and controlled.
  • the method for determining the gain of the Raman optical amplifier in the embodiment of the present invention acquires the current gain parameter information of the Raman optical amplifier in real time during the operation of the communication network, and according to the current gain parameter information, and the Raman optical amplifier The corresponding relationship between the gain of the monitoring channel and the gain parameter information is determined, and the current gain of the monitoring channel is determined.
  • the method according to an embodiment of the present invention can accurately determine the monitoring Current channel Gain, thereby accurately monitoring the gain spectrum of the Raman optical amplifier, and accurately adjusting the gain of the Raman optical amplifier to the target gain, thereby avoiding communication network failure due to gain variation of the Raman optical amplifier, It can improve the performance of the Raman optical amplifier and further improve the transmission performance of the communication network.
  • the method for determining the gain of the Raman optical amplifier in the embodiment of the present invention can determine the gain of the Raman optical amplifier without acquiring or determining the power of the input signal of the Raman optical amplifier, so the method can be accurately and conveniently The gain of the distributed Raman optical amplifier that determines that the input and output of the signal are not at the same location.
  • the method for determining the gain of the Raman optical amplifier in the embodiment of the present invention does not need to add an additional monitoring light source to determine the gain of the Raman optical amplifier, which can not only reduce the cost, but also further reduce the possible System risk.
  • the correspondence can be established not only in a low-gain scenario but also in a high-gain scenario, which can be avoided.
  • the problem of inaccurate control is established only in a low gain scenario and in a high gain scenario.
  • the Raman optical amplifier may include one or more pump sources for pumping the Raman optical amplifier, and the pump source may be a first-order pump source, or It is a second-order pump source and can also be other high-order pump sources.
  • the embodiment of the present invention is described by taking only the first-order pump source as an example, but the present invention is not limited thereto.
  • the Raman optical amplifier may be a forward Raman optical amplifier or a backward Raman optical amplifier, and the so-called forward Raman optical amplifier refers to the propagation direction of the pump light.
  • a Raman optical amplifier that coincides with the propagation direction of the signal light the so-called backward Raman optical amplifier refers to a Raman optical amplifier in which the propagation direction of the pump light is opposite to the propagation direction of the signal light.
  • the means for determining the gain of the Raman optical amplifier can obtain the current gain parameter information of the Raman optical amplifier by various methods.
  • the means for determining the gain of the Raman optical amplifier may first use a beam splitter to obtain a small portion of the signal light in the signal light; then, the portion of the signal light is incident on the wavelength selector to obtain the out-of-band of the Raman optical amplifier Amplifying the spontaneous emission ASE noise; Finally, the out-of-band ASE noise can be received by the photodetector and the out-of-band ASE noise power information of the Raman optical amplifier is determined.
  • the wavelength selector may be a filter or a wavelength division multiplexing device (Wavelength Division Multiplexing, referred to as "WDM").
  • the out-of-band ASE noise power information may include at least one of short-band out-of-band ASE noise power, long-band out-of-band ASE noise power, and out-band ASE noise total power; for example, when Raman light
  • the amplifier includes only one pump source, the short-band out-of-band ASE noise power of the Raman optical amplifier can be obtained, or only the long-band out-of-band ASE noise power of the Raman optical amplifier can be obtained, and only the Raman can be obtained.
  • the total power of the out-of-band ASE noise of the optical amplifier for example, when the Raman optical amplifier includes only two or more pump sources, the short-band out-of-band ASE noise power and the long-band out-of-band ASE of the Raman optical amplifier can be obtained.
  • Noise power, the short-band ASE noise power of the Raman optical amplifier and the total power of the out-of-band ASE noise can also be obtained, and the long-band ASE noise power of the Raman optical amplifier and the total power of the out-of-band ASE noise can also be obtained.
  • the embodiments of the present invention are not limited thereto.
  • long band and short band are relative to the wavelength of the data signal path of the Raman optical amplifier.
  • long band refers to a band longer than the wavelength of the data signal channel of the Raman optical amplifier
  • short band refers to a band shorter than the wavelength of the data signal channel of the Raman optical amplifier; for example, Raman light
  • the wavelength of the data signal channel of the amplifier ranges from 1530 nm to 1560 nm
  • the wavelength range of the "long wavelength band” may be 1560 nm to 1580 nm
  • the wavelength of the "short band” may range from 1510 nm to 1530 nm, but the present invention is not limited thereto.
  • the means for determining the gain of the Raman optical amplifier may also first use a beam splitter in combination with the photodetector to obtain the power of the pump light output from the pump source of the Raman optical amplifier, or to obtain the output of the Raman optical amplifier. The power of the signal.
  • the device for determining the gain of the Raman optical amplifier may determine the power of the pump light output by the pump source according to the driving current or the driving voltage of the controller for controlling the pump source, etc., which is not Limited to this.
  • the out-of-band amplified spontaneous emission ASE noise power information includes at least one of short-band out-of-band ASE noise power, long-band out-of-band ASE noise power, and out-band ASE noise total power;
  • the pump optical power information of the at least one pump source includes at least one of a driving voltage of the at least one pump source, a driving current of the at least one pump source, and a pumping light output by the at least one pump sourcekind.
  • a part of the signal light may be obtained by using a splitting method for detecting or measuring. Therefore, there may be a proportional coefficient between the result of the measurement by the partial signal light and the result of the measurement without the spectral splitting of all the signal light, such as the split ratio of the spectroscopic device and the like.
  • the output signal power of a Raman optical amplifier The rate information may include both the power of the entire output signal and the power of a portion of the output signal obtained by the beam splitting device.
  • the current gain parameter information of the acquired Raman optical amplifier may include gain parameter information obtained by measuring a part of the signal light, and may also include gain parameter information obtained by measuring all the signal lights.
  • the invention is not limited to this.
  • the embodiment of the present invention only takes the gain parameter information including the above three types of information as an example, but the present invention is not limited thereto.
  • the gain reference information of the Raman optical amplifier may further include information other than the outband ASE noise power.
  • the Raman optical amplifier 200 includes a first pump source 221 and a second pump source 222, and pump light of different wavelengths output by the two pump sources is coupled to the input link, for example, via a coupler 230.
  • the direction of transmission of the pump light is opposite to the direction of propagation of the input signal light, that is, the Raman optical amplifier 200 is a backward Raman optical amplifier.
  • the coupler is, for example, a wavelength division multiplexing device WDM; it should also be understood that the pump light can also be coupled into the fiber of the input link by other means, and embodiments of the invention are not limited thereto.
  • the two pump lights output by the first pump source 221 and the second pump source 222 may be separated by a first optical splitter (TAP) 251 and a second optical splitter 252 before entering the coupling device, respectively.
  • TAP first optical splitter
  • a small portion of the pump light is used, and the power of the portion of the pump light is determined by the first photodetector 261 and the second photodetector 262, respectively, and fed back to the gain controller 210 to monitor the pumping of the Raman optical amplifier 200.
  • the gain controller 210 controls the power of the pump light output by the pump source by outputting the driving current or the driving voltage of the pump source. Therefore, the gain controller 210 can also be based on the output driving current or driving voltage. , determine the power of the pump light output by the pump source.
  • the first wavelength selector 241 and the second wavelength selector 242 may be filters or a wavelength division multiplexer WDM to filter out the outbands of the long band and the short band of the Raman optical amplifier 200, respectively.
  • ASE noise, and the power of the noise is determined by the third photodetector 263 and the fourth photodetector 264, respectively, and fed back to the gain controller 210 to monitor the out-of-band of the short-band of the Raman optical amplifier 200.
  • the gain controller 210 can instantaneously acquire the out-of-band amplified spontaneous emission ASE noise power information of the Raman optical amplifier 200 through the information fed back by the photodetectors 261-265.
  • the embodiment of the present invention is only described by using the application scenario shown in FIG. 3 as an example, but the present invention is not limited thereto.
  • the method according to the embodiment of the present invention may also adopt other methods to obtain the current gain parameter of the Raman optical amplifier. information.
  • the determining the gain of the Raman optical amplifier may determine the Raman optical amplifier according to the current gain parameter information, and the correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information. The current gain of this monitoring channel.
  • the out-of-band amplified spontaneous emission ASE noise power information includes a short-band out-of-band ASE noise power and a long-band out-of-band ASE noise power; and the pump optical power information of the at least one pump source
  • the power of the pump light including the output of the at least one pump source; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, and the pump output by the at least one pump source
  • Each combination of the power of the light and the power information of the output signal corresponds to monitoring one gain of the channel.
  • the gain controller 210 may determine the Raman optical amplifier according to a predetermined correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information.
  • the current gain of the monitoring channel in the case of the current gain parameter information, wherein the correspondence between the gain of the monitoring channel and the gain parameter information can be determined by the following formula (1):
  • i is the monitoring channel number of the Raman optical amplifier
  • Gain_i is the gain of the i-th monitoring channel
  • Ppumpl and Ppump2 are the pumping lights of the two pump sources respectively Power
  • Pout is the power of the output signal of the Raman optical amplifier
  • Pasel and Pase2 are the short-band out-of-band ASE noise power and the long-band out-of-band ASE noise power
  • Al_i, Bl_i, Cl_i, Dl_i, El_i and Fl_i are the first Gain parameter coefficients for i monitoring channels.
  • the correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information can be determined by the following formula (2):
  • Gain _ i A2 _i + B2_ix Ppumpl + C2 _ i x Ppump2
  • Ppumpl and Ppump2 are the power of the pump light output by two pump sources respectively;
  • Pout is the power of the output signal of the Raman optical amplifier;
  • Pasel and Pase2 are the short-band out-of-band ASE noise power and the long-band out-of-band ASE noise power, respectively.
  • A2_i, B2_i, C2_i, D2_i, E2_i, F2_i, G2_i, H2_i, and J2_i are the gain parameter coefficients of the i-th monitoring channel.
  • the out-of-band amplified spontaneous emission ASE noise power information includes a short-band out-of-band ASE noise power and a long-band out-of-band ASE noise power; and the pump optical power information of the at least one pump source a driving voltage including the at least one pump source; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, the driving voltage of the at least one pump source, and the output signal power information
  • Each combination of pairs should monitor a gain of the channel.
  • the application scenario shown in FIG. 3 is still taken as an example.
  • the correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information can be determined by the following formula (3):
  • i is the monitoring channel number of the Raman optical amplifier
  • Gain_i is the gain of the ith monitoring channel
  • Vdrivel and Vdrive2 are the driving voltages of the two pump sources respectively
  • Pout is the power of the output signal of the Raman optical amplifier
  • Pasel and Pase2 are the short-band out-of-band ASE noise power and the long-band out-of-band ASE noise power
  • A3_i, B3_i, C3_i, D3_i, E3_i and F3_i are the i-th monitoring The gain parameter coefficient of the channel.
  • the out-of-band amplified spontaneous emission ASE noise power information includes a short-band out-of-band ASE noise power and a long-band out-of-band ASE noise power; and the pump optical power information of the at least one pump source
  • the driving current including the at least one pump source; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, the driving current of the at least one pump source, and the output signal power information
  • Each combination should monitor the channel A gain.
  • the application scenario shown in FIG. 3 is still taken as an example.
  • the correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information can be determined by the following formula (4):
  • Gain i A4 i + B4 i xIdrivel + C4 i x Idrive2 , ,
  • Idrivel and Idrive2 are the drive currents of the two pump sources respectively;
  • Pout is the power of the output signal of the Raman optical amplifier;
  • Pasel and Pase2 are the short-band out-of-band ASE noise power and the long-band out-of-band ASE noise power, respectively;
  • A4_i, B4_i , C4_i, D4_i, E4_i, and F4_i are the gain parameter coefficients of the i-th monitoring channel.
  • the out-of-band amplified spontaneous emission ASE noise power information includes a short-band out-of-band. ASE noise power and long-band out-of-band ASE noise power; pump optical power information of the at least one pump source includes power of pump light outputted by each pump source; in the correspondence, the short-band out-of-band ASE Each combination of noise power, the long band out-of-band ASE noise power, the power of the pump light output by each pump source, and the output signal power information corresponds to a gain of the channel.
  • the out-of-band amplified spontaneous emission ASE noise power information includes short-band out-of-band ASE noise power and long-band out-of-band ASE noise power; and the pump optical power information of the at least one pump source includes output of each pump source.
  • Each combination of the output signal power information and the output signal power should correspond to a gain of the channel.
  • the correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information is the gain of the monitoring channel and the out-band ASE noise power information, and the pump light of the at least one pump source.
  • the correspondence may also include at least one of reference information of the gain and gain parameter information of the monitoring channel. Correspondence.
  • the correspondence The relationship between the gain of the monitoring channel and the short-band out-of-band ASE noise power and the long-band out-of-band ASE noise power; for example, the correspondence is the gain of the monitoring channel and the out-of-band ASE noise power information and the pump optical power Correspondence between information, etc., but the present invention is not limited thereto.
  • the current gain parameter information of the acquired Raman optical amplifier may include gain parameter information obtained by measuring a part of the signal light, and may also include a gain parameter obtained by measuring all the signal lights.
  • the correspondence between the current gains of the monitoring channels of the Raman optical amplifiers may include the gain parameter information of a part of the signal light and the gain of the monitoring channel of the Raman optical amplifier.
  • the correspondence relationship may also include the correspondence relationship between the gain parameter information of all the signal lights and the gain of the monitoring channel of the Raman optical amplifier, but the present invention is not limited thereto.
  • the method for determining the gain of the Raman optical amplifier in the embodiment of the present invention acquires the current gain parameter information of the Raman optical amplifier in real time during the operation of the communication network, and according to the current gain parameter information, and the Raman optical amplifier The corresponding relationship between the gain of the monitoring channel and the gain parameter information is determined, and the current gain of the monitoring channel is determined.
  • the method according to an embodiment of the present invention can accurately determine the monitoring The current gain of the channel, thereby accurately monitoring the gain spectrum of the Raman optical amplifier, and accurately adjusting the gain of the Raman optical amplifier to the target gain, thereby avoiding communication due to gain variation of the Raman optical amplifier Network failures can improve the performance of Raman optical amplifiers and further improve the transmission performance of communication networks.
  • the method 100 further includes: S130, the Raman light is controlled by controlling a pump optical power of the at least one pump source of the Raman optical amplifier The gain of this monitoring channel of the amplifier is adjusted to the target gain.
  • the pump optical power of the at least one pump source that controls the Raman optical amplifier includes:
  • the monitoring channel of the Raman optical amplifier can be set to multiple, and the target is increased.
  • the benefit may also be set to multiple, and respectively by the magnitude relationship between each target gain and the gain of one or more monitoring channels, and by increasing or decreasing the pump light output from the pump source corresponding to the target gain
  • the power of the Raman optical amplifier can be adjusted to the target gain to control the gain of the Raman optical amplifier, thereby avoiding communication network failure caused by the gain variation of the Raman optical amplifier. And can improve the performance of the Raman optical amplifier and further improve the transmission performance of the communication network.
  • the gain spectrum of the input signal light amplified by the Raman optical amplifier is as shown in FIG.
  • the output power of the Raman optical amplifier includes two peaks B and D, and an output power valley (in the embodiment of the present invention, the device for controlling the gain of the Raman optical amplifier can be compared with the output power peak value
  • the three transmission channels corresponding to the output power valley are determined as the monitoring channels, so that the power of the pump source of the Raman optical amplifier can be more accurately controlled to more accurately control the gain of the Raman optical amplifier.
  • the means for determining the gain of the Raman optical amplifier can compare the average of G1 and G3 with the first target gain. If the average values of G1 and G3 are large, the power of the first pump source 221 is higher and needs to be lowered. Its power; conversely, if the average value of G1 and G3 is small, it means that the power of the first pump source 221 is low, and its power needs to be increased.
  • the means for controlling the gain of the Raman optical amplifier can compare the average of G2 and G3 with the second target gain. If the average of G2 and G3 is larger, the power of the second pump source 222 is compared. High, it is necessary to reduce its power; conversely, if the average value of G2 and G3 is small, it means that the power of the second pump source 222 is low and its power needs to be increased.
  • the first target gain corresponds to the first pump source
  • the second target gain corresponds to the second pump source
  • the first target gain and the second target gain may or may not be equal.
  • the means for determining the gain of the Raman optical amplifier can level the gain line; when the first target gain is not equal to the second target gain, determining the Raman optical amplifier
  • the gain device can achieve gain line tilt, but the invention is not limited thereto.
  • the embodiment of the present invention simulates the control of the gain of the Raman optical amplifier based on any one of the above formulas (1) to (4), and the simulation result shows that the method according to the embodiment of the present invention can control the gain error at Within 0.3dB, as shown in the right figure in Figure 6;
  • the maximum error of the gain of the Raman optical amplifier exceeds 1.2 dB, as shown in the left figure of Figure 6.
  • the abscissa is the number of channels of the Raman optical amplifier, and the ordinate is the output power.
  • the method for determining the gain of the Raman optical amplifier in the embodiment of the present invention acquires the current gain parameter information of the Raman optical amplifier in real time during the operation of the communication network, and according to the current gain parameter information, and the Raman optical amplifier The corresponding relationship between the gain of the monitoring channel and the gain parameter information is determined, and the current gain of the monitoring channel is determined.
  • the method according to an embodiment of the present invention can accurately determine the monitoring The current gain of the channel, thereby accurately monitoring the gain spectrum of the Raman optical amplifier, and accurately adjusting the gain of the Raman optical amplifier to the target gain, thereby avoiding communication due to gain variation of the Raman optical amplifier Network failures can improve the performance of Raman optical amplifiers and further improve the transmission performance of communication networks.
  • the correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information may be preset, or may be sent by other devices to the device for determining the gain of the Raman optical amplifier, or may be The newly established correspondence of the device.
  • the method 100 further includes:
  • the establishing a correspondence between the gain and the gain parameter information of the at least one monitoring channel of the monitoring channel includes:
  • the pump source has a plurality of pump source power combinations, only the power of the pump source is changed. Change, the other factors do not change, for example, the transmission channel distribution is unchanged, that is, the wavelength of the input signal, the number of channels, and the like do not change.
  • determining at least one monitoring channel for monitoring gain including:
  • a transmission channel corresponding to an output power peak and/or an output power valley of the Raman optical amplifier is determined as a monitoring channel in the at least one monitoring channel.
  • the device for determining the gain of the Raman optical amplifier can determine three transmission channels corresponding to the output power peaks B, D and the output power valley C as the monitoring channel, : 3 ⁇ 4 port FIG. Shown.
  • the determining the at least one monitoring channel for monitoring the gain comprises:
  • a transmission channel corresponding to a specific output power of the Raman optical amplifier is determined as a monitoring channel in the at least one monitoring channel, wherein the specific output power is different from an output power peak or an output power valley of the Raman optical amplifier. Power value.
  • the transmission channel corresponding to the output power valley value is determined to be a monitoring channel, and the transmission channel corresponding to the specific output power of the Raman optical amplifier can also be determined as the monitoring channel, but the present invention is not limited thereto.
  • other transmission channels of the Raman optical amplifier may also be determined as a monitoring channel.
  • a transmission channel whose output power is located between A and B may be determined as a monitoring channel, or the output power may be located.
  • the transmission channel between D and E is determined to be a monitoring channel.
  • the at least one monitoring channel for monitoring the gain preferably includes both the transmission channel whose output power is located to the left of the output power valley of the power curve shown in FIG. 5, and the output power is located.
  • the power curve shown in Figure 5 has a transmission channel to the right of the output power valley to more accurately monitor the gain spectrum of the Raman optical amplifier.
  • determining the first gain of each of the at least one monitoring channel under each pump source power combination respectively includes:
  • the Raman optical amplifier 200 shown in FIG. 3 is still taken as an example, in which three transmission channels Psigl, Psig2, and Psig3 corresponding to the output power peak and the output power valley are determined as the monitoring channels.
  • the Raman optical amplifier turns off the two pump sources
  • the output power curve Poff of the input signal light after passing through the transmission fiber can be obtained, thereby obtaining three monitoring channels Psigl.
  • the off-output power of the output signals of Psig2 and Psig3 when the pump source is turned off is recorded as Psigloff, Psig2off and Psig3off, respectively, and the unit is dBm.
  • the two pump sources of the Raman optical amplifier can be turned on, so that the Raman optical amplifier amplifies the input signal light, at this time, through the first photodetector 261, the second photodetector 262, and the third photodetection.
  • the 263, the fourth photodetector 264 and the fifth photodetector 265 can acquire the power Ppumpl of the pump light output by the first pump source 221 of the Raman optical amplifier 200, and the pump output by the second pump source 222.
  • the device for determining the gain of the Raman optical amplifier can acquire the pull The current gain parameter information of the MANN optical amplifier will not be described here.
  • the output power curve of the input signal light amplified by the Raman optical amplifier can be obtained, thereby obtaining three monitoring channels Psigl, Psig2, and Psig3 when the pump source is turned on.
  • the open pump output power of the output signal is recorded as Psiglon, Psig2on and Psig3on, respectively, and the unit is dBm.
  • the first gains Gl, G2, and G3 (in dB) of the three monitoring channels Psigl, Psig2, and Psig3 under the first pump source power combination are:
  • G2 Psig2on-Psig2off
  • the first gain should be the output signal power when the pump source is turned off and on.
  • the ratio in the normal operating range of the first pump source 221 and the second pump source 222, the power of the first pump source 221 and the second pump source 222 are respectively changed, and various pump source power combinations can be obtained. Other gain-related references remain unchanged at this time. According to the first gain and the corresponding first gain parameter information of each pump source power combination, the correspondence between the gain and the gain parameter information of the monitoring channel of the Raman optical amplifier can be established by fitting or the like.
  • the device for determining the gain of the Raman optical amplifier can establish the gain and gain parameter information of the monitoring channel of the Raman optical amplifier according to the first gain and the first gain parameter information of each pump source power combination. Correspondence. Therefore, the device for determining the gain of the Raman optical amplifier can acquire the current gain parameter information of the Raman optical amplifier in real time, and determine the current gain of the monitoring channel of the Raman optical amplifier according to the correspondence, so that the Raman can be determined according to the Raman The magnitude relationship between the current gain of the monitoring channel of the optical amplifier and the target gain controls the power of at least one of the pump sources of the Raman optical amplifier, thereby enabling control of the gain of the Raman optical amplifier.
  • different transmission channel distributions may be considered to fit the correspondence between the gain and the gain parameter information.
  • the relationship is such that the correspondence can be better applied to different application scenarios, thereby further improving the accuracy of controlling the gain of the Raman optical amplifier.
  • the transmission channel distribution change includes both an increase or decrease in the number of transmission channels, and a case where the number of transmission channels is constant but the distribution of each transmission channel in the spectrum space is changed.
  • the gain and gain parameter information of the monitoring channel of the Raman optical amplifier is established according to the first gain and the first gain parameter information of each pump source power combination.
  • Correspondence including:
  • the Raman optical amplifier increases the wave due to scheduling, fiber breakage, etc.
  • the transmission channel distribution changes, for example, the number of transmission channels increases or decreases; for example, the number of transmission channels does not change but each transmission The case where the distribution of channels in the spectrum space changes, and the like.
  • a plurality of transmission channel distributions may be set by changing the number of transmission channels to determine a second gain of each of the at least one monitoring channel under each transmission channel distribution, and corresponding The second gain parameter information is used to determine the correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information.
  • the means for determining the gain of the Raman optical amplifier may be configured according to the first gain and the first gain parameter information of each pump source power combination, and according to each of the transmission channels
  • the second gain and the second gain parameter information under the distribution establish a correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the method for determining the gain of the Raman optical amplifier in the embodiment of the present invention acquires the current gain parameter information of the Raman optical amplifier in real time during the operation of the communication network, and according to the current gain parameter information, and the Raman optical amplifier The corresponding relationship between the gain of the monitoring channel and the gain parameter information is determined, and the current gain of the monitoring channel is determined.
  • the method according to an embodiment of the present invention can accurately determine the monitoring The current gain of the channel, thereby accurately monitoring the gain spectrum of the Raman optical amplifier, and accurately adjusting the gain of the Raman optical amplifier to the target gain, thereby avoiding communication due to gain variation of the Raman optical amplifier Network failures can improve the performance of Raman optical amplifiers and further improve the transmission performance of communication networks.
  • a method for determining the gain of a Raman optical amplifier according to an embodiment of the present invention is described in detail above with reference to FIGS. 1 through 7.
  • a determination of a Raman optical amplifier according to an embodiment of the present invention will be described in detail with reference to FIGS. 8 through 12.
  • the gain of the device and the Raman optical amplifier will be described in detail with reference to FIGS. 8 through 12.
  • an apparatus 300 for determining a gain of a Raman optical amplifier includes:
  • a receiving part 310 for receiving information the receiving part having at least one input port 311;
  • a processing component 320 connected to the receiving component 310, wherein the processing component 320 is configured to: acquire current gain parameter information of the Raman optical amplifier, where the current gain parameter information comprises: an out-of-band amplified spontaneous emission ASE of the Raman optical amplifier Noise power information, the Raman optical amplifier Pump optical power information of at least one pump source and output signal power information of the Raman optical amplifier;
  • the current gain of the monitoring channel of the Raman optical amplifier is determined according to the obtained current gain parameter information and the correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information.
  • the apparatus for determining the gain of the Raman optical amplifier in the embodiment of the present invention acquires the current gain parameter information of the Raman optical amplifier in real time during the operation of the communication network, and according to the current gain parameter information, and the Raman optical amplifier The corresponding relationship between the gain of the monitoring channel and the gain parameter information is determined, and the current gain of the monitoring channel is determined.
  • the apparatus can accurately determine the monitoring The current gain of the channel, thereby accurately monitoring the gain spectrum of the Raman optical amplifier, and accurately adjusting the gain of the Raman optical amplifier to the target gain, thereby avoiding communication due to gain variation of the Raman optical amplifier Network failures can improve the performance of Raman optical amplifiers and further improve the transmission performance of communication networks.
  • the out-of-band amplified spontaneous emission ASE noise power information includes at least one of short-band out-of-band ASE noise power, long-band out-of-band ASE noise power, and out-band ASE noise total power;
  • the pump optical power information of the at least one pump source includes at least one of a driving voltage of the at least one pump source, a driving current of the at least one pump source, and a pumping light output by the at least one pump sourcekind.
  • long band and short band are relative to the wavelength of the data signal path of the Raman optical amplifier.
  • long band refers to a band longer than the wavelength of the data signal channel of the Raman optical amplifier
  • short band refers to a band shorter than the wavelength of the data signal channel of the Raman optical amplifier; for example, Raman light
  • the wavelength of the data signal channel of the amplifier ranges from 1530 nm to 1560 nm
  • the wavelength range of the "long wavelength band” may be 1560 nm to 1580 nm
  • the wavelength of the "short band” may range from 1510 nm to 1530 nm, but the present invention is not limited thereto.
  • a part of the signal light may be obtained by using a splitting method for detecting or measuring. Therefore, there may be a proportional coefficient between the result of the measurement by the partial signal light and the result of the measurement without the spectral splitting of all the signal light, such as the split ratio of the spectroscopic device and the like.
  • the output signal power of a Raman optical amplifier The rate information may include both the power of the entire output signal and the power of a portion of the output signal obtained by the beam splitting device.
  • the out-of-band amplified spontaneous emission ASE noise power information includes a short-band out-of-band ASE noise power and a long-band out-of-band ASE noise power;
  • the pump optical power information of the at least one pump source includes the at least one pump source The power of the output pump light; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, the power of the pump light output by the at least one pump source, and the output signal
  • Each combination of power information corresponds to monitoring one gain of the channel.
  • the out-of-band amplified spontaneous emission ASE noise power information includes a short-band out-of-band ASE noise power and a long-band out-of-band ASE noise power;
  • the pump optical power information of the at least one pump source includes the at least one pump source Driving voltage; in the correspondence, each combination of the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, the driving voltage of the at least one pump source, and the output signal power information should be monitored A gain of the channel.
  • the out-of-band amplified spontaneous emission ASE noise power information includes a short-band out-of-band ASE noise power and a long-band out-of-band ASE noise power; and the pump optical power information of the at least one pump source
  • the driving current including the at least one pump source; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, the driving current of the at least one pump source, and the output signal power information
  • the current gain parameter information of the acquired Raman optical amplifier may include gain parameter information obtained by measuring a part of the signal light, and may also include a gain parameter obtained by measuring all the signal lights.
  • the correspondence between the current gains of the monitoring channels of the Raman optical amplifiers may include the gain parameter information of a part of the signal light and the gain of the monitoring channel of the Raman optical amplifier.
  • the correspondence relationship may also include the correspondence relationship between the gain parameter information of all the signal lights and the gain of the monitoring channel of the Raman optical amplifier, but the present invention is not limited thereto.
  • the processing component 320 is further configured to: adjust a gain of the monitoring channel of the Raman optical amplifier to a target gain by controlling a pump optical power of the at least one pump source of the Raman optical amplifier.
  • the processing component 320 controls the pump optical power of the at least one pump source of the Raman optical amplifier, specifically: Determining a magnitude relationship between a current gain of the monitoring channel of the Raman optical amplifier and the target gain;
  • the processing component 320 is further configured to:
  • the at least one monitoring channel comprises a transmission channel corresponding to an output power peak and/or an output power valley of the Raman optical amplifier.
  • the apparatus 300 further includes: at least one output port 330, configured to output a driving voltage or a driving current to the at least one pump source of the Raman optical amplifier;
  • the processing component 320 includes: a memory 321 for storing instructions and the corresponding relationship, and a processor 322 for executing instructions stored in the memory.
  • the apparatus 300 is a means for determining the gain of the backward Raman optical amplifier.
  • the processor 322 may be a central processing unit (a central processing unit (CPU), and the processor 322 may also be another general-purpose processor, a digital signal processor (DSP). ), application specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 321 can include read only memory and random access memory and provides instructions and data to the processor 710. A portion of the memory 321 may also include a non-volatile random access memory. For example, the memory 321 can also store information of the device type.
  • the memory 321 and the processor 322 may be connected by a bus system, which may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus.
  • a bus system which may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus.
  • the embodiment of the present invention will be described by taking only a bus system as an example.
  • each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 710 or an instruction in a form of software.
  • the steps of the method disclosed in connection with the embodiments of the present invention can be directly implemented as a hardware processor, or by a combination of hardware and software modules in the processor.
  • the software modules can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 720.
  • the processor 710 reads the information in the memory 720 and completes the steps of the above method in combination with hardware. To avoid repetition, it will not be described in detail here.
  • the processing component 320 optionally establishes a correspondence between the gain and the gain parameter information of the at least one monitoring channel of the monitoring channel, including:
  • the processing component 320 determines that the at least one monitoring channel used for monitoring the gain specifically includes:
  • a transmission channel corresponding to an output power peak and/or an output power valley of the Raman optical amplifier is determined as a monitoring channel in the at least one monitoring channel.
  • the processing component 320 determines that the at least one monitoring channel used for monitoring the gain specifically includes:
  • a transmission channel corresponding to a specific output power of the Raman optical amplifier is determined as a monitoring channel in the at least one monitoring channel, wherein the specific output power is different from an output power peak or an output power valley of the Raman optical amplifier. Power value.
  • the processing component 320 is specifically configured to:
  • the processing component 320 is specifically configured to: For determining a plurality of transmission channel distributions for the Raman optical amplifier, respectively determining a second gain of each of the at least one monitoring channel under each transmission channel distribution, and the Raman optical amplifier is in each Second gain parameter information under the transmission channel distribution;
  • the processing component 320 is specifically configured to: according to the first gain and the first gain parameter information of each pump source power combination, and according to the second gain and the first distribution of each transmission channel
  • the second gain parameter information establishes a correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information.
  • apparatus 300 for determining the gain of a Raman optical amplifier in accordance with an embodiment of the present invention may correspond to an execution body of a method in an embodiment of the present invention, and that the above and other operations and/or functions of respective modules in apparatus 300 are respectively In order to implement the corresponding processes of the respective methods in FIG. 1 to FIG. 7, for the sake of cleaning, no further details are provided herein.
  • the apparatus for determining the gain of the Raman optical amplifier in the embodiment of the present invention acquires the current gain parameter information of the Raman optical amplifier in real time during the operation of the communication network, and according to the current gain parameter information, and the Raman optical amplifier The corresponding relationship between the gain of the monitoring channel and the gain parameter information is determined, and the current gain of the monitoring channel is determined.
  • the apparatus can accurately determine the monitoring The current gain of the channel, thereby accurately monitoring the gain spectrum of the Raman optical amplifier, and accurately adjusting the gain of the Raman optical amplifier to the target gain, thereby avoiding communication due to gain variation of the Raman optical amplifier Network failures can improve the performance of Raman optical amplifiers and further improve the transmission performance of communication networks.
  • an embodiment of the present invention further provides a Raman optical amplifier 500, the Raman optical amplifier 500 comprising:
  • At least one pump source 520 for pumping the Raman optical amplifier 500 At least one pump source 520 for pumping the Raman optical amplifier 500
  • the apparatus 510 includes: a receiving component for receiving information, the receiving component having at least one input port; and a processing component coupled to the receiving component, wherein the processing component is configured to: acquire a current gain of the Raman optical amplifier Parameter information, the current gain parameter information includes: out-of-band amplified spontaneous emission ASE noise power information of the Raman optical amplifier, pump optical power information of at least one pump source of the Raman optical amplifier, and the Raman optical amplifier Output signal power information; according to the obtained current gain parameter information, and the increase of the monitoring channel of the Raman optical amplifier The current gain of the monitoring channel of the Raman optical amplifier is determined by the correspondence between the gain and the gain parameter information.
  • the Raman optical amplifier of the embodiment of the present invention acquires the current gain parameter information of the Raman optical amplifier in real time during the operation of the communication network, and according to the current gain parameter information, and the gain of the monitoring channel of the Raman optical amplifier The correspondence between the gain parameter information determines the current gain of the monitoring channel. Since the current gain parameter information includes out-of-band ASE noise power information of the Raman optical amplifier, pump optical power information of at least one pump source, and output signal power information, the Raman optical amplifier according to an embodiment of the present invention can be accurate The current gain of the monitoring channel is determined, thereby accurately monitoring the gain spectrum of the Raman optical amplifier, and accurately adjusting the gain of the Raman optical amplifier to the target gain, thereby avoiding the gain variation due to the Raman optical amplifier. The resulting communication network is faulty and can improve the performance of the Raman optical amplifier and further improve the transmission performance of the communication network.
  • the Raman optical amplifier 500 further includes:
  • a coupler 530 configured to couple pump light output by the at least one pump source to an input fiber of the Raman optical amplifier 500
  • a wavelength selector 540 configured to obtain an out-of-band amplified spontaneous emission ASE noise of the Raman optical amplifier 500
  • a first photodetector 550 configured to convert the out-of-band ASE noise into a first electrical signal, and input the first electrical signal to the processing component of the device 510;
  • a second photodetector 560 is configured to convert the output signal of the Raman optical amplifier 500 into a second electrical signal and input the second electrical signal to the processing component of the device 510.
  • the Raman optical amplifier 500 further includes: at least one optical splitter 570 and a third photodetector 580;
  • the at least one beam splitter 550 is configured to divide the pump light output by the at least one pump source 520 into two parts, a part of the pump light is input to the input fiber of the Raman optical amplifier 500; and another part of the pump light is input to The third photodetector 580;
  • the third photodetector 580 is for converting the received optical signal into a third electrical signal and inputting the third electrical signal to the processing component of the device 510.
  • the out-of-band amplified spontaneous emission ASE noise power information includes short-band out-of-band ASE noise power, long-band out-of-band ASE noise power, and out-of-band ASE noise. At least one of total power; pump optical power information of the at least one pump source including a driving voltage of the at least one pump source, a driving current of the at least one pump source, and a pump output by the at least one pump source At least one of the power of Puguang.
  • the out-of-band amplified spontaneous emission ASE noise power information includes a short-band out-of-band ASE noise power and a long-band out-of-band ASE noise power; and the pump optical power information of the at least one pump source
  • the power of the pump light including the output of the at least one pump source; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, and the pump output by the at least one pump source
  • Each combination of the power of the light and the power information of the output signal corresponds to monitoring one gain of the channel.
  • the out-of-band amplified spontaneous emission ASE noise power information includes a short-band out-of-band ASE noise power and a long-band out-of-band ASE noise power; and the pump optical power information of the at least one pump source a driving voltage including the at least one pump source; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, the driving voltage of the at least one pump source, and the output signal power information
  • Each combination of pairs should monitor a gain of the channel.
  • the out-of-band amplified spontaneous emission ASE noise power information includes a short-band out-of-band ASE noise power and a long-band out-of-band ASE noise power; and the pump optical power information of the at least one pump source
  • the driving current including the at least one pump source; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, the driving current of the at least one pump source, and the output signal power information
  • the processing component is further configured to: control a gain of the monitoring channel of the Raman optical amplifier by controlling a pump optical power of the at least one pump source of the Raman optical amplifier Adjust to the target gain.
  • the processing component controls the pump optical power of the at least one pump source of the Raman optical amplifier, specifically:
  • the processing component is further configured to:
  • the at least one monitoring channel comprises a transmission channel corresponding to an output power peak and/or an output power valley of the Raman optical amplifier.
  • the Raman optical amplifier 500 is a backward Raman optical amplifier.
  • the processing component establishes a correspondence between gain and gain parameter information of the monitoring channel of the Raman optical amplifier, including:
  • the processing component respectively determines a first gain of each of the at least one monitoring channel under each pump source power combination, including:
  • the difference between the open pump output power of each of the monitoring channels and the off pump output power of each of the monitored channels is determined as the first gain of each of the monitored channels at each of the pump source power combinations.
  • the processing component establishes gain and gain parameter information of the monitoring channel of the Raman optical amplifier according to the first gain and the first gain parameter information of each pump source power combination.
  • Correspondence including:
  • the processing component determines at least one monitoring channel for monitoring gain, including:
  • a transmission channel corresponding to an output power peak and/or an output power valley of the Raman optical amplifier is determined as a monitoring channel in the at least one monitoring channel.
  • the processing component determines at least one monitoring channel for monitoring gain, including:
  • a transmission channel corresponding to a specific output power of the Raman optical amplifier is determined as a monitoring channel in the at least one monitoring channel, wherein the specific output power is different from an output power peak or an output power valley of the Raman optical amplifier. Power value.
  • the apparatus 510 included in the Raman optical amplifier according to an embodiment of the present invention may correspond to an execution body of the method in the embodiment of the present invention, and an apparatus 300 for determining a Raman optical amplifier according to an embodiment of the present invention.
  • the above and other operations and/or functions of the respective modules in the device 510 are respectively omitted in order to implement the respective processes of the respective methods in FIGS. 1 to 7.
  • the Raman optical amplifier of the embodiment of the present invention acquires the current gain parameter information of the Raman optical amplifier in real time during the operation of the communication network, and according to the current gain parameter information, and the gain of the monitoring channel of the Raman optical amplifier The correspondence between the gain parameter information determines the current gain of the monitoring channel. Since the current gain parameter information includes out-of-band ASE noise power information of the Raman optical amplifier, pump optical power information of at least one pump source, and output signal power information, the Raman optical amplifier according to an embodiment of the present invention can be accurate The current gain of the monitoring channel is determined, thereby accurately monitoring the gain spectrum of the Raman optical amplifier, and accurately adjusting the gain of the Raman optical amplifier to the target gain, thereby avoiding the gain variation due to the Raman optical amplifier. The resulting communication network is faulty and can improve the performance of the Raman optical amplifier and further improve the transmission performance of the communication network.
  • B corresponding to A means that B is associated with A, and B can be determined based on A.
  • determining B according to A does not mean that B is determined only on the basis of A, but also based on A and/or other information.
  • system and “network” are often used interchangeably herein.
  • the term “and/or” in this context is merely an association that describes the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and both A and B exist, separately In the three cases of B.
  • the character "/" in this article generally means that the contextual object is an "or" relationship.
  • an embodiment of the present invention further provides an apparatus 700 for determining a gain of a Raman optical amplifier, the apparatus 700 including a processor 710, a memory 720, and a bus system 730.
  • the processor 710 and the memory 720 are connected by the bus system 730, which is used to store instructions, and the processor 710 is configured to execute instructions stored in the memory 720.
  • the processor 710 is configured to:
  • the current gain parameter information includes: out-of-band amplified spontaneous emission ASE noise power information of the Raman optical amplifier, and pump optical power of at least one pump source of the Raman optical amplifier Information and output signal power information of the Raman optical amplifier;
  • the current gain of the monitoring channel of the Raman optical amplifier is determined according to the current gain parameter information and the correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information.
  • the apparatus for determining the gain of the Raman optical amplifier in the embodiment of the present invention acquires the current gain parameter information of the Raman optical amplifier in real time during the operation of the communication network, and according to the current gain parameter information, and the Raman optical amplifier The corresponding relationship between the gain of the monitoring channel and the gain parameter information is determined, and the current gain of the monitoring channel is determined.
  • the apparatus can accurately determine the monitoring The current gain of the channel, thereby accurately monitoring the gain spectrum of the Raman optical amplifier, and accurately adjusting the gain of the Raman optical amplifier to the target gain, thereby avoiding communication due to gain variation of the Raman optical amplifier Network failures can improve the performance of Raman optical amplifiers and further improve the transmission performance of communication networks.
  • the processor 710 may be a central processing unit (a central processing unit), and the processor 710 may also be another general-purpose processor, a digital signal processor (DSP). ), application specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and the like.
  • DSP digital signal processor
  • ASICs application specific integrated circuits
  • FPGAs off-the-shelf programmable gate arrays
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 720 can include read only memory and random access memory and provides instructions and data to the processor 710. A portion of the memory 720 can also include a non-volatile random access memory. For example, the memory 720 can also store information of the device type.
  • the bus system 730 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 730 in the figure.
  • the steps of the foregoing methods may be completed by an integrated logic circuit of hardware in the processor 710 or an instruction in the form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software modules can be located in random memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, etc., which are well established in the art.
  • the storage medium is located in the memory 720.
  • the processor 710 reads the information in the memory 720 and combines the hardware to perform the steps of the above method. To avoid repetition, it will not be described in detail here.
  • the out-of-band amplified spontaneous emission ASE noise power information includes at least one of short-band out-of-band ASE noise power, long-band out-of-band ASE noise power, and out-band ASE noise total power;
  • the pump optical power information of a pump source includes at least one of a driving voltage of the at least one pump source, a driving current of the at least one pump source, and a power of the pump light output by the at least one pump source.
  • the out-of-band amplified spontaneous emission ASE noise power information includes short-band out-of-band ASE noise power and long-band out-of-band ASE noise power; and the pump optical power information of the at least one pump source includes the The power of the pump light output by the at least one pump source; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, and the pump light output by the at least one pump source Each combination of power and the output signal power information corresponds to monitoring one gain of the channel.
  • the out-of-band amplified spontaneous emission ASE noise power information includes short-band out-of-band ASE noise power and long-band out-of-band ASE noise power; and the pump optical power information of the at least one pump source includes the a driving voltage of the at least one pump source; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, the driving voltage of the at least one pump source, and the output signal power information This combination corresponds to monitoring a gain of the channel.
  • the out-of-band amplified spontaneous emission ASE noise power information includes short-band out-of-band ASE noise power and long-band out-of-band ASE noise power; and the pump optical power information of the at least one pump source includes the a driving current of at least one pump source; in the correspondence, the short-band out-of-band ASE noise power, the long-band out-of-band ASE noise power, the at least one pump
  • Each combination of the drive current of the source and the output signal power information should monitor a gain of the channel.
  • the processor 710 is further configured to: adjust a gain of the monitoring channel of the Raman optical amplifier by controlling pump power of the at least one pump source of the Raman optical amplifier Target gain
  • the processor 710 controls the pump optical power of the at least one pump source of the Raman optical amplifier, including:
  • the processor 710 is further configured to: before determining a current gain of the monitoring channel of the Raman optical amplifier, establishing gain and gain parameter information including at least one monitoring channel of the monitoring channel. Correspondence relationship.
  • the apparatus 700 further includes a receiver 740 and a transmitter 750, wherein the receiver 740 is configured to receive current gain parameter information of the Raman optical amplifier; the transmitter 750 is used for the pump source The drive voltage or drive current is sent to change the power of the pump light output by the pump source.
  • the processor 710 establishes a correspondence between the gain of the monitoring channel of the Raman optical amplifier and the gain parameter information, including:
  • the processor 710 determines a first gain of each of the at least one monitoring channel under each pump source power combination, including:
  • each of the pump source power combinations for the pump source of the Raman optical amplifier a closed output power of an output signal of each monitoring channel in a monitoring channel when the pump source is off, and an open pump output power of an output signal of each monitoring channel when the pump source is turned on;
  • the difference between the open pump output power of each of the monitoring channels and the off pump output power of each of the monitored channels is determined as the first gain of each of the monitored channels at each of the pump source power combinations.
  • the processor 710 establishes a gain and a gain parameter of the monitoring channel of the Raman optical amplifier according to the first gain and the first gain parameter information of each pump source power combination.
  • Correspondence of information including:
  • the processor 710 determines at least one monitoring channel for monitoring a gain, including:
  • a transmission channel corresponding to an output power peak and/or an output power valley of the Raman optical amplifier is determined as a monitoring channel in the at least one monitoring channel.
  • the processor 710 determines at least one monitoring channel for monitoring a gain, including:
  • a transmission channel corresponding to a specific output power of the Raman optical amplifier is determined as a monitoring channel in the at least one monitoring channel, wherein the specific output power is different from an output power peak or an output power valley of the Raman optical amplifier. Power value.
  • apparatus 700 for determining the gain of a Raman optical amplifier in accordance with an embodiment of the present invention may correspond to an executive body of a method in an embodiment of the present invention, and may correspond to apparatus 300 and apparatus 510 in accordance with an embodiment of the present invention, and The above and other operations and/or functions of the various modules in the device 700 are respectively omitted for the purpose of implementing the respective processes of the respective methods in FIGS. 1 to 7.
  • the apparatus for determining the gain of the Raman optical amplifier in the embodiment of the present invention acquires the current gain parameter information of the Raman optical amplifier in real time during the operation of the communication network, and according to the current gain parameter information, and the Raman optical amplifier The correspondence between the gain of the monitoring channel and the gain parameter information, Determine the current gain of the monitoring channel.
  • the apparatus can accurately determine the monitoring The current gain of the channel, thereby accurately monitoring the gain spectrum of the Raman optical amplifier, and accurately adjusting the gain of the Raman optical amplifier to the target gain, thereby avoiding communication due to gain variation of the Raman optical amplifier Network failures can improve the performance of Raman optical amplifiers and further improve the transmission performance of communication networks.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or software. The form of the functional unit is implemented.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, and the program code can be stored. Medium.

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Abstract

本发明公开了一种确定拉曼光放大器的增益的方法、装置和拉曼光放大器。该方法包括：获取拉曼光放大器的当前增益参数信息；根据该当前增益参数信息，以及该拉曼光放大器的监控通道的增益与增益参数信息的对应关系，确定该拉曼光放大器的该监控通道的当前增益。本发明实施例的确定拉曼光放大器的增益的方法、装置和拉曼光放大器，能够准确地确定监控通道的当前增益，由此能够准确地监控拉曼光放大器的增益谱，并能够准确地将拉曼光放大器的增益调节至目标增益，从而能够避免由于拉曼光放大器的增益变化而导致的通信网络故障，并能够提高拉曼光放大器的性能。

Description

确定拉曼光放大器的增益的方法、 装置和拉曼光放大器 技术领域
本发明涉及通信领域， 尤其涉及通信领域中确定拉曼光放大器的增益的 方法、 装置和拉曼光放大器。 背景技术
拉曼（Raman )光放大器是一种基于拉曼效应的光放大器。 所谓的拉曼 效应是指， 当一束弱光和一束强光同时进入光纤（同向或反向）时， 如果弱 光的光谱正好在强光的拉曼增益谱的范围内， 那么强光的能量就会向弱光转 移， 使得弱光得到放大。 因而， 在通信网络中， 可以基于拉曼效应使得信号 光放大， 从而能够增加信号光的传输距离。
在网络运行中， 由于调度、 断纤等原因造成增掉波， 会出现传输通道分 布变化的情况， 例如， 传输通道数量增加或减少的情况； 又例如， 传输通道 数量不变但各传输通道在频谱空间上的分布发生改变的情况等， 而传输通道 分布的变化会导致拉曼光放大器的增益发生改变。 另外， 由于电路之间的干 扰等， 可能导致泵浦源的驱动电流或驱动电压发生改变， 由此可能导致泵浦 光的功率发生改变， 这也会导致拉曼光放大器的增益发生改变。 而这种输出 信号光的增益的改变会在级联链路中累积下去， 并可能导致链路出现故障， 因而在通信网络中需要监控这种增益的变化。
但由于种种原因， 现有技术难以准确地确定拉曼光放大器的增益变化， 由此可能导致通信网络故障。 发明内容
本发明实施例提供了一种确定拉曼光放大器的增益的方法、装置和拉曼 光放大器， 能够准确地确定拉曼光放大器的增益， 由此能够避免由于拉曼光 放大器的增益变化而导致的通信网络故障。
第一方面， 提供了一种确定拉曼光放大器的增益的方法， 该方法包括： 获取拉曼光放大器的当前增益参数信息， 该当前增益参数信息包括： 该拉曼 光放大器的带外放大自发辐射 ASE噪声功率信息、 该拉曼光放大器的至少 一个泵浦源的泵浦光功率信息以及该拉曼光放大器的输出信号功率信息； 根 据该当前增益参数信息， 以及该拉曼光放大器的监控通道的增益与增益参数 信息的对应关系， 确定该拉曼光放大器的该监控通道的当前增益。
结合第一方面， 在第一方面的第一种可能的实现方式中， 该带外放大自 发辐射 ASE噪声功率信息包括短波段带外 ASE噪声功率、 长波段带外 ASE 噪声功率和带外 ASE噪声总功率中的至少一种； 该至少一个泵浦源的泵浦 光功率信息包括该至少一个泵浦源的驱动电压、该至少一个泵浦源的驱动电 流和该至少一个泵浦源输出的泵浦光的功率中的至少一种。
结合第一方面， 在第一方面的第二种可能的实现方式中， 该带外放大自 发辐射 ASE噪声功率信息包括短波段带外 ASE噪声功率和长波段带外 ASE 噪声功率； 该至少一个泵浦源的泵浦光功率信息包括该至少一个泵浦源输出 的泵浦光的功率； 在该对应关系中， 该短波段带外 ASE噪声功率、 该长波 段带外 ASE噪声功率、 该至少一个泵浦源所输出的泵浦光的功率和该输出 信号功率信息的每种组合对应该监控通道的一个增益。
结合第一方面， 在第一方面的第三种可能的实现方式中， 该带外放大自 发辐射 ASE噪声功率信息包括短波段带外 ASE噪声功率和长波段带外 ASE 噪声功率； 该至少一个泵浦源的泵浦光功率信息包括该至少一个泵浦源的驱 动电压；在该对应关系中，该短波段带外 ASE噪声功率、该长波段带外 ASE 噪声功率、该至少一个泵浦源的驱动电压和该输出信号功率信息的每种组合 对应该监控通道的一个增益。
结合第一方面， 在第一方面的第四种可能的实现方式中， 该带外放大自 发辐射 ASE噪声功率信息包括短波段带外 ASE噪声功率和长波段带外 ASE 噪声功率； 该至少一个泵浦源的泵浦光功率信息包括该至少一个泵浦源的驱 动电流；在该对应关系中，该短波段带外 ASE噪声功率、该长波段带外 ASE 噪声功率、该至少一个泵浦源的驱动电流和该输出信号功率信息的每种组合 对应该监控通道的一个增益。
结合第一方面或第一方面的第一种至第四种可能的实现方式中的任一 种可能的实现方式，在第一方面的第五种可能的实现方式中，该方法还包括： 通过控制该拉曼光放大器的该至少一个泵浦源的泵浦光功率，将该拉曼光放 大器的该监控通道的增益调节至目标增益。
结合第一方面的第五种可能的实现方式，在第一方面的第六种可能的实 现方式中，该控制该拉曼光放大器的该至少一个泵浦源的泵浦光功率，包括： 确定该拉曼光放大器的该监控通道的当前增益与该目标增益之间的大小关 系； 在该监控通道的当前增益大于该目标增益时， 降低该至少一个泵浦源的 泵浦光功率； 或在该监控通道的当前增益小于该目标增益时， 增加该至少一 个泵浦源的泵浦光功率。
结合第一方面或第一方面的第一种至第六种可能的实现方式中的任一 种可能的实现方式，在第一方面的第七种可能的实现方式中，该方法还包括： 在确定该拉曼光放大器的该监控通道的当前增益之前， 建立包括该监控通道 的至少一个监控通道的增益与增益参数信息的对应关系。
结合第一方面的第七种可能的实现方式，在第一方面的第八种可能的实 现方式中， 该至少一个监控通道包括与该拉曼光放大器的输出功率峰值和 / 或输出功率谷值相应的传输通道。
第二方面， 提供了一种确定拉曼光放大器的增益的装置， 该装置包括： 用于接收信息的接收部件， 该接收部件具有至少一个输入端口； 以及与该接 收部件连接的处理部件， 其中， 该处理部件用于： 获取拉曼光放大器的当前 增益参数信息， 该当前增益参数信息包括： 该拉曼光放大器的带外放大自发 辐射 ASE噪声功率信息、 该拉曼光放大器的至少一个泵浦源的泵浦光功率 信息以及该拉曼光放大器的输出信号功率信息； 根据获取的该当前增益参数 信息， 以及该拉曼光放大器的监控通道的增益与增益参数信息的对应关系， 确定该拉曼光放大器的该监控通道的当前增益。
结合第二方面， 在第二方面的第一种可能的实现方式中， 该带外放大自 发辐射 ASE噪声功率信息包括短波段带外 ASE噪声功率、 长波段带外 ASE 噪声功率和带外 ASE噪声总功率中的至少一种； 该至少一个泵浦源的泵浦 光功率信息包括该至少一个泵浦源的驱动电压、该至少一个泵浦源的驱动电 流和该至少一个泵浦源输出的泵浦光的功率中的至少一种。
结合第二方面， 在第二方面的第二种可能的实现方式中， 该带外放大自 发辐射 ASE噪声功率信息包括短波段带外 ASE噪声功率和长波段带外 ASE 噪声功率； 该至少一个泵浦源的泵浦光功率信息包括该至少一个泵浦源输出 的泵浦光的功率； 在该对应关系中， 该短波段带外 ASE噪声功率、 该长波 段带外 ASE噪声功率、 该至少一个泵浦源所输出的泵浦光的功率和该输出 信号功率信息的每种组合对应该监控通道的一个增益。
结合第二方面， 在第二方面的第三种可能的实现方式中， 该带外放大自 发辐射 ASE噪声功率信息包括短波段带外 ASE噪声功率和长波段带外 ASE 噪声功率； 该至少一个泵浦源的泵浦光功率信息包括该至少一个泵浦源的驱 动电压；在该对应关系中，该短波段带外 ASE噪声功率、该长波段带外 ASE 噪声功率、该至少一个泵浦源的驱动电压和该输出信号功率信息的每种组合 对应该监控通道的一个增益。
结合第二方面， 在第二方面的第四种可能的实现方式中， 该带外放大自 发辐射 ASE噪声功率信息包括短波段带外 ASE噪声功率和长波段带外 ASE 噪声功率； 该至少一个泵浦源的泵浦光功率信息包括该至少一个泵浦源的驱 动电流；在该对应关系中，该短波段带外 ASE噪声功率、该长波段带外 ASE 噪声功率、该至少一个泵浦源的驱动电流和该输出信号功率信息的每种组合 对应该监控通道的一个增益。
结合第二方面或第二方面的第一种至第四种可能的实现方式中的任一 种可能的实现方式， 在第二方面的第五种可能的实现方式中， 该处理部件还 用于： 通过控制该拉曼光放大器的该至少一个泵浦源的泵浦光功率， 将该拉 曼光放大器的该监控通道的增益调节至目标增益。
结合第二方面的第五种可能的实现方式，在第二方面的第六种可能的实 现方式中， 该处理部件控制该拉曼光放大器的该至少一个泵浦源的泵浦光功 率， 具体包括： 确定该拉曼光放大器的该监控通道的当前增益与该目标增益 之间的大小关系； 在确定的该监控通道的当前增益大于该目标增益时， 降低 该至少一个泵浦源的泵浦光功率； 或在确定的该监控通道的当前增益小于该 目标增益时， 增加该至少一个泵浦源的泵浦光功率。
结合第二方面或第二方面的第一种至第六种可能的实现方式中的任一 种可能的实现方式， 在第二方面的第七种可能的实现方式中， 该处理部件还 用于： 在确定该拉曼光放大器的该监控通道的当前增益之前， 建立包括该监 控通道的至少一个监控通道的增益与增益参数信息的对应关系。
结合第二方面的第七种可能的实现方式，在第二方面的第八种可能的实 现方式中， 该至少一个监控通道包括与该拉曼光放大器的输出功率峰值和 / 或输出功率谷值相应的传输通道。
结合第二方面或第二方面的第一种至第八种可能的实现方式中的任一 种可能的实现方式，在第二方面的第九种可能的实现方式中，该装置还包括： 至少一个输出端口， 用于向该拉曼光放大器的至少一个泵浦源输出驱动电压 或驱动电流； 其中， 该处理部件包括： 存储器和处理器， 该存储器用于存储 指令以及该对应关系， 该处理器用于执行该存储器存储的指令。
结合第二方面或第二方面的第一种至第九种可能的实现方式中的任一 种可能的实现方式， 在第二方面的第十种可能的实现方式中， 该装置为用于 确定后向拉曼光放大器的增益的装置。
第三方面， 提供了一种拉曼光放大器， 该拉曼光放大器包括： 根据本发 明实施例所述的确定拉曼光放大器的增益的装置； 和用于给该拉曼光放大器 进行泵浦的至少一个泵浦源，其中，该装置包括： 用于接收信息的接收部件， 该接收部件具有至少一个输入端口； 以及与该接收部件连接的处理部件， 其 中， 该处理部件用于： 获取拉曼光放大器的当前增益参数信息， 该当前增益 参数信息包括： 该拉曼光放大器的带外放大自发辐射 ASE噪声功率信息、 该拉曼光放大器的至少一个泵浦源的泵浦光功率信息以及该拉曼光放大器 的输出信号功率信息； 根据获取的该当前增益参数信息， 以及该拉曼光放大 器的监控通道的增益与增益参数信息的对应关系，确定该拉曼光放大器的该 监控通道的当前增益。
结合第三方面， 在第三方面的第一种可能的实现方式中， 该拉曼光放大 器还包括： 耦合器， 用于将该至少一个泵浦源输出的泵浦光耦合到该拉曼光 放大器的输入光纤； 波长选择器， 用于获取该拉曼光放大器的带外放大自发 辐射 ASE噪声； 第一光电探测器， 用于将该带外 ASE噪声转换为第一电信 号， 并将该第一电信号输入至该装置的该处理部件； 第二光电探测器， 用于 将该拉曼光放大器的输出信号转换为第二电信号， 并将该第二电信号输入至 该装置的该处理部件。
结合第三方面或第三方面的第一种可能的实现方式，在第三方面的第二 种可能的实现方式中， 该拉曼光放大器还包括： 至少一个分光器和第三光电 探测器； 其中， 该至少一个分光器用于将该至少一个泵浦源输出的泵浦光分 成两部分， 一部分泵浦光输入至该拉曼光放大器的输入光纤； 另一部分泵浦 光输入至该第三光电探测器； 该第三光电探测器用于将接收的光信号转换为 第三电信号， 并将该第三电信号输入至该装置的该处理部件。
基于上述技术方案， 本发明实施例的确定拉曼光放大器的增益的方法、 装置和拉曼光放大器， 在通信网络运行中， 实时获取拉曼光放大器的当前增 益参数信息， 并根据该当前增益参数信息， 以及该拉曼光放大器的监控通道 的增益与增益参数信息的对应关系， 确定该监控通道的当前增益。 由于该当 前增益参数信息包括该拉曼光放大器的带外 ASE噪声功率信息、 至少一个 泵浦源的泵浦光功率信息以及输出信号功率信息， 因而根据本发明实施例的 方法、 装置和拉曼光放大器能够准确地确定监控通道的当前增益， 由此能够 准确地监控拉曼光放大器的增益谱， 并能够准确地将拉曼光放大器的增益调 节至目标增益，从而能够避免由于拉曼光放大器的增益变化而导致的通信网 络故障， 并能够提高拉曼光放大器的性能， 以及进一步提高通信网络的传输 性能。 附图说明
为了更清楚地说明本发明实施例的技术方案， 下面将对本发明实施例中 所需要使用的附图作筒单地介绍， 显而易见地， 下面所描述的附图仅仅是本 发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动的 前提下， 还可以根据这些附图获得其他的附图。
图 1是本发明实施例的一种应用场景的示意性框图。
图 2是根据本发明实施例的确定拉曼光放大器的增益的方法的示意性流 程图。
图 3是本发明实施例的另一种应用场景的示意性框图。
图 4是根据本发明实施例的确定拉曼光放大器的增益的方法的另一示意 性流程图。
图 5是根据本发明实施例的拉曼光放大器的增益谱示意图。
图 6 是根据本发明实施例的确定拉曼光放大器的增益的模拟结果示意 图。
图 7是根据本发明实施例的确定拉曼光放大器的增益的方法的再一示意 性流程图。
图 8是根据本发明实施例的确定拉曼光放大器的增益的装置的示意性框 图。
图 9是根据本发明实施例的确定拉曼光放大器的增益的装置的另一示意 性框图。
图 10是根据本发明实施例的拉曼光放大器的示意性框图。
图 11是根据本发明实施例的拉曼光放大器的另一示意性框图。 图 12是根据本发明实施例的确定拉曼光放大器的增益的装置的再一示 意性框图。 具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行 清楚、 完整地描述， 显然， 所描述的实施例是本发明的一部分实施例， 而不 是全部实施例。 基于本发明中的实施例， 本领域普通技术人员在没有做出创 造性劳动的前提下所获得的所有其他实施例， 都应属于本发明保护的范围。
图 1示出了本发明实施例的一种应用场景的示意性框图。 如图 1所示， 输入信号由拉曼光放大器 10放大后输出， 其中， 该拉曼光放大器 10可以包 括泵浦源 11和控制器 12, 该泵浦源 11用于输出泵浦光， 该控制器 12用于 控制该泵浦源 11的驱动电流或驱动电压， 从而控制泵浦源 12输出的泵浦光 的功率。
不同于目前光通信系统中常用的掺铒光纤放大器， 需要特殊的光纤作为 增益介质， 拉曼光放大器能够利用链路中的传输光纤作为增益介质。 因此， 拉曼光放大器能够做成分布式放大器， 并且该光放大器仅需要包括泵浦光和 控制系统， 就能够利用传输光纤对信号光进行放大。 另外， 如果拉曼光放大 器同时采用多个不同波长的泵浦光进行泵浦时， 能够获得^艮宽的增益谱； 并 且通过控制各个泵浦光的泵浦功率， 能够在艮大范围内获得平坦度 4艮好的增 益谱。
在目前的密集波分复用系统中，一根光纤通常会同时传输 40或 80路光 信号。 在网络运行中， 由于调度、 断纤等原因造成增掉波， 会出现传输通道 分布变化的情况， 例如， 传输通道数量增加或减少的情况； 又例如， 传输通 道数量不变但各传输通道在频谱空间上的分布发生改变的情况等。 例如， 对 于传输通道总数为 80的链路， 由于调度或断纤等原因， 20个传输通道的信 号不再经过某个跨段， 那么这个跨段传输信号光的通道数量就由原来的 80 路减少到 60路。 在链路的输入端， 每个传输通道的光信号的输入功率不变， 但传输通道的数量减少了， 因此， 输入的信号光的总功率就相应减少， 使得 输入的信号光对泵浦光抽取的能量就减少了， 并导致链路中剩余的泵浦光的 功率增加， 泵浦光的能量更集中地分配到剩余的信号光上， 由此导致剩余的 信号光在链路中受到的增益就会增加。 因而， 传输通道数量的减少会导致输 出端的信号光的增益增加。 而传输通道数量增加的情况与此相反， 会导致输 出端的信号光的增益减少。 另外， 泵浦源输出的泵浦光的功率的改变， 也会 导致拉曼光放大器的增益发生改变。这种增益的变化会在级联链路中累积下 去， 并可能导致链路出现故障， 因而在通信系统中需要确定并监控拉曼光放 大器的增益变化， 从而能够抑制这种增益的动态变化， 提高通信网络的传输 性能。
图 2示出了根据本发明实施例的确定拉曼光放大器的增益的方法 100的 示意性流程图， 该方法 100可以由确定拉曼光放大器的增益的装置执行， 例 如该装置可以为拉曼光放大器， 或该装置也可以为设置在拉曼光放大器内部 的增益控制器等，例如图 1所示的控制器 12。如图 2所示，该方法 100包括： S110, 获取拉曼光放大器的当前增益参数信息， 该当前增益参数信息包 括： 该拉曼光放大器的带外放大自发 射 ( Amplified Spontaneous Emission, 筒称为 "ASE" )噪声功率信息、 该拉曼光放大器的至少一个泵浦源的泵浦 光功率信息以及该拉曼光放大器的输出信号功率信息；
S120, 根据该当前增益参数信息， 以及该拉曼光放大器的监控通道的增 益与增益参数信息的对应关系，确定该拉曼光放大器的该监控通道的当前增 益。
具体而言， 为了能够准确地确定拉曼光放大器的当前增益， 以能够对拉 曼光放大器的增益进行准确监控与控制，确定拉曼光放大器的增益的装置可 以首先实时地获取拉曼光放大器的带外 ASE噪声功率信息、 该拉曼光放大 器的至少一个泵浦源的泵浦光功率信息以及该拉曼光放大器的输出信号的 功率信息； 然后， 确定拉曼光放大器的增益的装置可以基于预先设置的或新 建立的或获取的该拉曼光放大器的监控通道的增益与增益参数信息的对应 关系，确定该拉曼光放大器的监控通道在具有当前增益参数信息的情况下的 当前增益， 由此能够准确地监控并控制拉曼光放大器的增益谱。
因此， 本发明实施例的确定拉曼光放大器的增益的方法， 在通信网络运 行中， 实时获取拉曼光放大器的当前增益参数信息， 并根据该当前增益参数 信息， 以及该拉曼光放大器的监控通道的增益与增益参数信息的对应关系， 确定该监控通道的当前增益。 由于该当前增益参数信息包括该拉曼光放大器 的带外 ASE噪声功率信息、 至少一个泵浦源的泵浦光功率信息以及输出信 号功率信息， 因而根据本发明实施例的方法能够准确地确定监控通道的当前 增益， 由此能够准确地监控拉曼光放大器的增益谱， 并能够准确地将拉曼光 放大器的增益调节至目标增益，从而能够避免由于拉曼光放大器的增益变化 而导致的通信网络故障， 并能够提高拉曼光放大器的性能， 以及进一步提高 通信网络的传输性能。
另外， 本发明实施例的确定拉曼光放大器的增益的方法， 不需要获取或 确定拉曼光放大器的输入信号的功率就可以确定拉曼光放大器的增益， 因而 该方法能够准确地且方便地确定信号的输入端和输出端不位于同一位置的 分布式拉曼光放大器的增益。 另外， 本发明实施例的确定拉曼光放大器的增 益的方法， 也不需要增加额外的监控光源来确定拉曼光放大器的增益， 不仅 能够减少成本， 也能够进一步降低该监控光源可能带来的系统风险。 此外， 本发明实施例的方法， 由于考虑了影响拉曼光放大器的增益的多种因素， 因 而该对应关系不仅在低增益的场景下能够成立，在高增益的场景下也能够成 立， 能够避免现有技术中仅在低增益的场景下成立而高增益的场景下控制不 准确的问题。
应理解， 在本发明实施例中， 拉曼光放大器可以包括一个或多个用于给 该拉曼光放大器进行泵浦的泵浦源， 该泵浦源可以为一阶泵浦源， 也可以为 二阶泵浦源， 还可以为其它高阶泵浦源。 本发明实施例仅以一阶泵浦源为例 进行说明， 但本发明并不限于此。
还应理解，在本发明实施例中，拉曼光放大器可以为前向拉曼光放大器， 也可以为后向拉曼光放大器， 所谓的前向拉曼光放大器是指泵浦光的传播方 向与信号光的传播方向一致的拉曼光放大器，所谓的后向拉曼光放大器是指 泵浦光的传播方向与信号光的传播方向相反的拉曼光放大器。本发明实施例 仅以后向拉曼光放大器为例进行说明， 但本发明并不限于此。
具体地， 在 S110 中， 确定拉曼光放大器的增益的装置可以采用多种方 法获取拉曼光放大器的当前增益参数信息。
例如， 确定拉曼光放大器的增益的装置可以先采用分光器， 获取信号光 中的一小部分信号光； 接着， 该部分信号光入射到波长选择器， 以获取该拉 曼光放大器的带外放大自发辐射 ASE噪声； 最后， 该带外 ASE噪声可以由 光电探测器接收， 并确定该拉曼光放大器的带外 ASE噪声功率信息。 例如， 该波长选择器可以为滤波器， 也可以为波分复用器件 （Wavelength Division Multiplexing, 筒称为 "WDM" )等。 在本发明实施例中，该带外 ASE噪声功率信息可以包括短波段带外 ASE 噪声功率、长波段带外 ASE噪声功率和带外 ASE噪声总功率中的至少一种； 例如， 当拉曼光放大器仅包括一个泵浦源时， 可以获取该拉曼光放大器的短 波段带外 ASE噪声功率， 也可以仅获取该拉曼光放大器的长波段带外 ASE 噪声功率， 还可以仅获取该拉曼光放大器的带外 ASE噪声总功率； 又例如， 当拉曼光放大器仅包括两个以上的泵浦源时，可以获取该拉曼光放大器的短 波段带外 ASE噪声功率和长波段带外 ASE噪声功率， 也可以获取该拉曼光 放大器的短波段带外 ASE噪声功率和带外 ASE噪声总功率， 还可以获取该 拉曼光放大器的长波段带外 ASE噪声功率和带外 ASE噪声总功率等， 本发 明实施例并不限于此。
应理解， 在本发明实施例中， "长波段" 和 "短波段" 是相对于拉曼光 放大器的数据信号通道的波长而言的。 例如， "长波段" 指比拉曼光放大器 的数据信号通道的波长更长的波段； "短波段" 指比拉曼光放大器的数据信 号通道的波长更短的波段； 又例如， 拉曼光放大器的数据信号通道的波长范 围为 1530nm至 1560nm,则 "长波段"的波长范围可以为 1560nm至 1580nm, "短波段" 的波长范围可以为 1510nm至 1530nm, 但本发明并不限于此。
例如，确定拉曼光放大器的增益的装置也可以先采用分光器与光电探测 器相结合， 获取该拉曼光放大器的泵浦源输出的泵浦光的功率， 或获取拉曼 光放大器的输出信号的功率。 又例如， 确定拉曼光放大器的增益的装置可以 根据控制器输出的用于控制泵浦源的驱动电流或驱动电压，确定泵浦源输出 的泵浦光的功率等， 本发明实施例并不限于此。
在本发明实施例中， 可选地， 该带外放大自发辐射 ASE噪声功率信息 包括短波段带外 ASE噪声功率、长波段带外 ASE噪声功率和带外 ASE噪声 总功率中的至少一种； 该至少一个泵浦源的泵浦光功率信息包括该至少一个 泵浦源的驱动电压、该至少一个泵浦源的驱动电流和该至少一个泵浦源输出 的泵浦光的功率中的至少一种。
应理解， 在本发明实施例中， 为了在不影响网络正常运行的情况下， 获 取拉曼光放大器的当前增益参数信息时， 通常可以采用分光的方法， 获取一 部分信号光以用于检测或测量， 因而通过该部分信号光进行测量得到的结果 与不进行分光以全部信号光进行测量得到的结果之间可能具有一比例系数， 该比例系数例如为分光器件的分光比等。 例如， 拉曼光放大器的输出信号功 率信息既可以包括全部输出信号的功率，也可以包括通过分光器件得到的一 部分输出信号的功率。
因此， 在本发明实施例中， 获取的拉曼光放大器的当前增益参数信息既 可以包括对一部分信号光进行测量得到的增益参数信息，也可以包括对全部 信号光进行测量得到的增益参数信息， 本发明并不限于此。
应理解， 本发明实施例仅以增益参数信息包括上述三类信息为例进行说 明， 但本发明并不限于此， 例如， 拉曼光放大器的增益参考信息还可以包括 除了带外 ASE噪声功率信息、 泵浦源输出的泵浦光的功率信息以及输出信 号的功率信息之外的其它信息。
下文中将以图 3所示的应用场景中的拉曼光放大器 200为例，详细说明 根据本发明实施例的确定拉曼光放大器的增益的方法。
如图 3所示，拉曼光放大器 200包括第一泵浦源 221和第二泵浦源 222, 这两个泵浦源输出的波长不同的泵浦光例如通过耦合器 230耦合到输入链路 的光纤中， 其中泵浦光的传输方向与输入的信号光的传播方向相反， 即该拉 曼光放大器 200为后向拉曼光放大器。 应理解， 该耦合器例如为波分复用器 件 WDM;还应理解，泵浦光还可以通过其它方式耦合进输入链路的光纤中， 本发明实施例并不限于此。
第一泵浦源 221和第二泵浦源 222输出的两路泵浦光在进入耦合器件之 前， 可以分别由第一光分路器（TAP ) 251和第二光分路器 252分离出一小 部分泵浦光， 并分别由第一光电探测器 261和第二光电探测器 262确定该部 分泵浦光的功率， 并反馈到增益控制器 210中， 以监控拉曼光放大器 200的 泵浦源 221输出的泵浦光的功率 Ppumpl , 以及泵浦源 222输出的泵浦光的 功率 Ppump2。 另外， 应理解， 增益控制器 210通过输出泵浦源的驱动电流 或驱动电压， 以控制泵浦源输出的泵浦光的功率， 因此， 增益控制器 210也 可以根据输出的驱动电流或驱动电压， 确定泵浦源输出的泵浦光的功率。
输入的信号光经过耦合器 230之后， 可以再经过第一波长选择器 241、 第二波长选择器 242和第三光分路器 253后输出到下游的链路中。 其中， 该 第一波长选择器 241和第二波长选择器 242可以为滤波器，也可以为波分复 用器 WDM, 以分别滤出该拉曼光放大器 200的长波段和短波段的带外 ASE 噪声， 并分别由第三光电探测器 263和第四光电探测器 264确定该噪声的功 率后反馈到增益控制器 210中， 以监控该拉曼光放大器 200的短波段的带外 ASE噪声功率 Pasel , 以及长波段的带外 ASE噪声功率 Pase2; 该第三光分 路器 253分离出的一部分信号光由第五光电探测器 265确定该输出信号的功 率后， 反馈到增益控制器 210中， 以监控拉曼光放大器 200的输出信号的功 率 Pout。
因而，在拉曼光放大器 200的实际运行中，通过上述光电探测器 261-265 反馈的信息，增益控制器 210可以即时获取该拉曼光放大器 200的带外放大 自发辐射 ASE噪声功率信息、 该拉曼光放大器的至少一个泵浦源的泵浦光 功率信息以及该拉曼光放大器的输出信号功率信息。
应理解， 本发明实施例仅以图 3所示的应用场景为例进行说明， 但本发 明并不限于此，根据本发明实施例的方法还可以采用其它方法获取拉曼光放 大器的当前增益参数信息。
具体地， 在 S120中， 确定拉曼光放大器的增益的装置可以根据该当前 增益参数信息， 以及该拉曼光放大器的监控通道的增益与增益参数信息的对 应关系， 确定该拉曼光放大器的该监控通道的当前增益。
在本发明实施例中， 可选地， 该带外放大自发辐射 ASE噪声功率信息 包括短波段带外 ASE噪声功率和长波段带外 ASE噪声功率； 该至少一个泵 浦源的泵浦光功率信息包括该至少一个泵浦源输出的泵浦光的功率； 在该对 应关系中， 该短波段带外 ASE噪声功率、 该长波段带外 ASE噪声功率、 该 至少一个泵浦源所输出的泵浦光的功率和该输出信号功率信息的每种组合 对应该监控通道的一个增益。
例如， 仍以图 3所示的应用场景为例进行说明， 增益控制器 210可以根 据预先确定的该拉曼光放大器的监控通道的增益与增益参数信息的对应关 系，确定该拉曼光放大器的监控通道在具有当前增益参数信息的情况下的当 前增益， 其中， 该监控通道的增益与增益参数信息的对应关系可以由下面的 公式（ 1 )确定：
Gain _ i = Al_i + Bl_i x Ppumpl + CI _ i x Ppump2
+Dl_i x Pout + El_i x Pasel + Fl_ix Pase2 其中， i为拉曼光放大器的监控通道号； Gain_i为第 i个监控通道的增益； Ppumpl 和 Ppump2分别为两个泵浦源输出的泵浦光的功率； Pout为拉曼光 放大器的输出信号的功率； Pasel和 Pase2分别为短波段带外 ASE噪声功率 和长波段带外 ASE噪声功率； Al_i、 Bl_i、 Cl_i、 Dl_i、 El_i和 Fl_i为第 i个监控通道的增益参数系数。
又例如， 该拉曼光放大器的监控通道的增益与增益参数信息的对应关系 可以由下面的公式（2 )确定：
Gain _ i = A2 _i + B2_ix Ppumpl + C2 _ i x Ppump2
+D2_i x Pout + E2_i x Pasel + F2_i x Pase2 ( 2 ) +G2 _ i x Pase l2 + H2 _i x Pase22 + J2 _ i x Pase 1 x Pase2 其中， i为拉曼光放大器的监控通道号； Gain_i为第 i个监控通道的增益；
Ppumpl 和 Ppump2分别为两个泵浦源输出的泵浦光的功率； Pout为拉曼光 放大器的输出信号的功率； Pasel和 Pase2分别为短波段带外 ASE噪声功率 和长波段带外 ASE噪声功率； A2_i、 B2_i、 C2_i、 D2_i、 E2_i、 F2_i、 G2_i、 H2_i和 J2_i为第 i个监控通道的增益参数系数。
在本发明实施例中， 可选地， 该带外放大自发辐射 ASE噪声功率信息 包括短波段带外 ASE噪声功率和长波段带外 ASE噪声功率； 该至少一个泵 浦源的泵浦光功率信息包括该至少一个泵浦源的驱动电压； 在该对应关系 中， 该短波段带外 ASE噪声功率、 该长波段带外 ASE噪声功率、 该至少一 个泵浦源的驱动电压和该输出信号功率信息的每种组合对应该监控通道的 一个增益。
例如， 仍以图 3所示的应用场景为例进行说明， 该拉曼光放大器的监控 通道的增益与增益参数信息的对应关系可以由下面的公式（3 )确定：
Gain i = A3 i + B3 i xVdrivel + C3 ix Vdrive2 , 、
~ ~ ~ ~ ( 3 )
+D3 _ i x Pout + E3_ix Pase 1 + F3 _ i x Pase2 其中， i为拉曼光放大器的监控通道号； Gain_i为第 i个监控通道的增益； Vdrivel 和 Vdrive2分别为两个泵浦源的驱动电压； Pout为拉曼光放大器的 输出信号的功率； Pasel和 Pase2分别为短波段带外 ASE噪声功率和长波段 带外 ASE噪声功率； A3_i、 B3_i、 C3_i、 D3_i、 E3_i和 F3_i为第 i个监控 通道的增益参数系数。
在本发明实施例中， 可选地， 该带外放大自发辐射 ASE噪声功率信息 包括短波段带外 ASE噪声功率和长波段带外 ASE噪声功率； 该至少一个泵 浦源的泵浦光功率信息包括该至少一个泵浦源的驱动电流； 在该对应关系 中， 该短波段带外 ASE噪声功率、 该长波段带外 ASE噪声功率、 该至少一 个泵浦源的驱动电流和该输出信号功率信息的每种组合对应该监控通道的 一个增益。
例如， 仍以图 3所示的应用场景为例进行说明， 该拉曼光放大器的监控 通道的增益与增益参数信息的对应关系可以由下面的公式（4 )确定：
Gain i = A4 i + B4 i xIdrivel + C4 i x Idrive2 , 、
_ - - _ ( 4 )
+D4 _ i x Pout + E4_ix Pase 1 + F4_i x Pase2 其中， i为拉曼光放大器的监控通道号； Gain_i为第 i个监控通道的增益；
Idrivel 和 Idrive2分别为两个泵浦源的驱动电流； Pout为拉曼光放大器的输 出信号的功率； Pasel和 Pase2分别为短波段带外 ASE噪声功率和长波段带 外 ASE噪声功率； A4_i、 B4_i、 C4_i、 D4_i、 E4_i和 F4_i为第 i个监控通 道的增益参数系数。
应理解， 在本发明实施例中仅以上述公式（1 )至（4 ) 为例进行说明， 但本发明并不限于此， 例如， 该带外放大自发辐射 ASE噪声功率信息包括 短波段带外 ASE噪声功率和长波段带外 ASE噪声功率； 该至少一个泵浦源 的泵浦光功率信息包括每个泵浦源输出的泵浦光的功率； 在该对应关系中， 该短波段带外 ASE噪声功率、 该长波段带外 ASE噪声功率、 该每个泵浦源 所输出的泵浦光的功率和该输出信号功率信息的每种组合对应该监控通道 的一个增益。 又例如， 该带外放大自发辐射 ASE噪声功率信息包括短波段 带外 ASE噪声功率和长波段带外 ASE噪声功率； 该至少一个泵浦源的泵浦 光功率信息包括每个泵浦源输出的泵浦光的功率和驱动电压； 在该对应关系 中， 该短波段带外 ASE噪声功率、 该长波段带外 ASE噪声功率、 该每个泵 浦源所输出的泵浦光的功率、驱动电压和该输出信号功率信息的每种组合对 应该监控通道的一个增益。
还应理解， 在本发明实施例中， 仅以公式（1 )至（4 )所示的函数关系 为例来说明拉曼光放大器的监控通道的增益与增益参数信息的对应关系，但 本发明并不限于此，拉曼光放大器的监控通道的增益与增益参数信息的对应 关系还可以具有其它形式， 例如对应关系表的形式等。
应理解， 在本发明实施例中， 该拉曼光放大器的监控通道的增益与增益 参数信息的对应关系， 为监控通道的增益与带外 ASE噪声功率信息、 至少 一个泵浦源的泵浦光功率信息和拉曼光放大器的输出信号功率信息这三者 之间的对应关系， 但本发明并不限于此， 该对应关系也可以包括监控通道的 增益与增益参数信息中的至少一种参考信息的对应关系。 例如， 该对应关系 为监控通道的增益与短波段带外 ASE噪声功率和长波段带外 ASE噪声功率 之间的对应关系； 又例如， 该对应关系为监控通道的增益与带外 ASE噪声 功率信息和泵浦光功率信息之间的对应关系等， 但本发明并不限于此。
还应理解， 在本发明实施例中， 获取的拉曼光放大器的当前增益参数信 息既可以包括对一部分信号光进行测量得到的增益参数信息，也可以包括对 全部信号光进行测量得到的增益参数信息； 相应地， 在本发明实施例中， 用 于确定拉曼光放大器的监控通道的当前增益的对应关系， 既可以包括一部分 信号光的增益参数信息与拉曼光放大器的监控通道的增益的对应关系，也可 以包括全部信号光的增益参数信息与拉曼光放大器的监控通道的增益的对 应关系， 但本发明并不限于此。
因此， 本发明实施例的确定拉曼光放大器的增益的方法， 在通信网络运 行中， 实时获取拉曼光放大器的当前增益参数信息， 并根据该当前增益参数 信息， 以及该拉曼光放大器的监控通道的增益与增益参数信息的对应关系， 确定该监控通道的当前增益。 由于该当前增益参数信息包括该拉曼光放大器 的带外 ASE噪声功率信息、 至少一个泵浦源的泵浦光功率信息以及输出信 号功率信息， 因而根据本发明实施例的方法能够准确地确定监控通道的当前 增益， 由此能够准确地监控拉曼光放大器的增益谱， 并能够准确地将拉曼光 放大器的增益调节至目标增益，从而能够避免由于拉曼光放大器的增益变化 而导致的通信网络故障， 并能够提高拉曼光放大器的性能， 以及进一步提高 通信网络的传输性能。
在本发明实施例中， 可选地， 如图 4所示， 该方法 100还包括： S130, 通过控制该拉曼光放大器的该至少一个泵浦源的泵浦光功率， 将 该拉曼光放大器的该监控通道的增益调节至目标增益。
具体地， 该控制该拉曼光放大器的该至少一个泵浦源的泵浦光功率， 包 括：
确定该拉曼光放大器的该监控通道的当前增益与该目标增益之间的大 小关系；
在该监控通道的当前增益大于该目标增益时， 降低该至少一个泵浦源的 泵浦光功率； 或在该监控通道的当前增益小于该目标增益时， 增加该至少一 个泵浦源的泵浦光功率。
在本发明实施例中， 拉曼光放大器的监控通道可以设置为多个， 目标增 益也可设置为多个， 并且分别通过每个目标增益与一个或多个监控通道的增 益之间的大小关系， 并通过增加或降低与该目标增益相对应的泵浦源输出的 泵浦光的功率， 可以将该拉曼光放大器的该监控通道的增益调节至目标增 益， 以实现对拉曼光放大器的增益的控制， 从而能够避免由于拉曼光放大器 的增益变化而导致的通信网络故障， 并能够提高拉曼光放大器的性能， 以及 进一步提高通信网络的传输性能。
仍以图 3所示的应用场景为例，对于包括两个泵浦源 221和 222的拉曼 光放大器 200, 输入的信号光经过该拉曼光放大器放大后的增益谱如图 5所 示， 其中， 该拉曼光放大器的输出功率包括两个峰值 B和 D, 以及一个输出 功率谷值(。 在本发明实施例中， 控制拉曼光放大器的增益的装置可以将与 该输出功率峰值和输出功率谷值相应的三个传输通道都确定为监测信道，从 而能够更准确地控制该拉曼光放大器的泵浦源的功率， 以更准确地控制该拉 曼光放大器的增益。
假设 G1为与输出功率峰值 B相应的传输通道的增益； G2为与输出功 率峰值 D相应的传输通道的增益； G3为与输出功率谷值 C相应的传输通道 的增益。 确定拉曼光放大器的增益的装置可以将 G1和 G3的平均值与第一 目标增益进行比较， 如果 G1和 G3的平均值较大， 则说明第一泵浦源 221 的功率较高， 需要降低其功率； 反之， 如果 G1和 G3的平均值较小， 则说 明第一泵浦源 221的功率较低， 需要增加其功率。 另一方面， 控制拉曼光放 大器的增益的装置可以将 G2和 G3的平均值与第二目标增益进行比较， 如 果 G2和 G3的平均值较大， 则说明第二泵浦源 222的功率较高， 需要降低 其功率； 反之， 如果 G2和 G3的平均值较小， 则说明第二泵浦源 222的功 率较低， 需要增加其功率。
其中， 第一目标增益与第一泵浦源相应， 第二目标增益与第二泵浦源相 应， 该第一目标增益与第二目标增益可以相等， 也可以不相等。 当第一目标 增益与第二目标增益相等时，确定拉曼光放大器的增益的装置可以把增益谱 线调平； 当第一目标增益与第二目标增益不相等时， 确定拉曼光放大器的增 益的装置可以实现增益谱线倾斜， 但本发明并不限于此。
本发明实施例基于上述公式（1 )至（4 ) 中的任意一种公式， 对拉曼光 放大器的增益的控制进行了模拟，模拟结果表明根据本发明实施例的方法能 够将增益误差控制在 0.3dB以内， 如图 6中的右图所示； 而基于现有技术控 制拉曼光放大器增益的最大误差超过 1.2dB , 如图 6中的左图所示。 其中在 图 6的左图和右图中， 横坐标为拉曼光放大器的通道的数量， 纵坐标为输出 功率。
因此， 本发明实施例的确定拉曼光放大器的增益的方法， 在通信网络运 行中， 实时获取拉曼光放大器的当前增益参数信息， 并根据该当前增益参数 信息， 以及该拉曼光放大器的监控通道的增益与增益参数信息的对应关系， 确定该监控通道的当前增益。 由于该当前增益参数信息包括该拉曼光放大器 的带外 ASE噪声功率信息、 至少一个泵浦源的泵浦光功率信息以及输出信 号功率信息， 因而根据本发明实施例的方法能够准确地确定监控通道的当前 增益， 由此能够准确地监控拉曼光放大器的增益谱， 并能够准确地将拉曼光 放大器的增益调节至目标增益，从而能够避免由于拉曼光放大器的增益变化 而导致的通信网络故障， 并能够提高拉曼光放大器的性能， 以及进一步提高 通信网络的传输性能。
在本发明实施例中，拉曼光放大器的监控通道的增益与增益参数信息的 对应关系可以是预先设置的，也可以由其它设备发送给确定拉曼光放大器的 增益的装置， 还可以是该装置新建立的对应关系。
可选地， 如图 7所示， 该方法 100还包括：
S140, 在确定该拉曼光放大器的该监控通道的当前增益之前， 建立包括 该监控通道的至少一个监控通道的增益与增益参数信息的对应关系。
下文中将结合图 3所示的应用场景，详细描述如何建立拉曼光放大器的 监控通道的增益与增益参数信息的对应关系。
可选地， 在本发明实施例中， 如图 4所示， 该建立包括该监控通道的至 少一个监控通道的增益与增益参数信息的对应关系， 包括：
在该拉曼光放大器的多个传输信道中，确定用于监测增益并且包括该监 控通道的至少一个监测信道；
对于该拉曼光放大器的泵浦源具有的多种泵浦源功率组合， 分别确定该 至少一个监测信道中的每个监测信道在每种泵浦源功率组合下的第一增益， 以及该拉曼光放大器在每种泵浦源功率组合下的第一增益参数信息；
根据该每种泵浦源功率组合下的该第一增益和该第一增益参数信息， 建 立该拉曼光放大器的监控通道的增益与增益参数信息的对应关系。
应理解， 在泵浦源具有的多种泵浦源功率组合， 仅泵浦源的功率发生改 变， 其余因素都不改变， 例如传输通道分布不变， 即输入信号的波长、 通道 数量等都不改变。
具体而言， 在该拉曼光放大器的多个传输信道中， 确定用于监测增益的 至少一个监测信道， 包括：
将与该拉曼光放大器的输出功率峰值和 /或输出功率谷值相应的传输通 道， 确定为该至少一个监测信道中的监测信道。
例如， 在本发明实施例中， 确定拉曼光放大器的增益的装置可以将与输 出功率峰值 B、 D以及输出功率谷值 C相应的三个传输通道都确定为监测信 道， ：¾口图 5所示。
在本发明实施例中，可选地，该确定用于监测增益的至少一个监测信道， 包括：
将与该拉曼光放大器的特定输出功率相应的传输通道，确定为该至少一 个监测信道中的监测信道， 其中该特定输出功率与该拉曼光放大器的输出功 率峰值或输出功率谷值相差预定功率值。
即在本发明实施例中， 除了可以将与该拉曼光放大器的输出功率峰值和
/或输出功率谷值相应的传输通道确定为监测信道之外，也可以将与该拉曼光 放大器的特定输出功率相应的传输通道确定为监测信道，但本发明并不限于 此。
例如， 在本发明实施例中， 还可以将拉曼光放大器的其它传输通道确定 为监测信道， 例如， 可以将输出功率位于 A和 B之间的传输通道确定为监 测信道， 或将输出功率位于 D和 E之间的传输通道确定为监测信道。 但应 理解， 在本发明实施例中， 用于监测增益的至少一个监测信道优选地既包括 输出功率位于图 5所示的功率曲线的输出功率谷值左侧的传输通道， 又包括 输出功率位于图 5所示的功率曲线的输出功率谷值右侧的传输通道， 以更准 确地监控拉曼光放大器的增益谱。
在本发明实施例中， 该分别确定该至少一个监测信道中的每个监测信道 在每种泵浦源功率组合下的第一增益， 包括：
对于该拉曼光放大器的泵浦源的每种泵浦源功率组合， 分别确定该至少 一个监测信道中的每个监测信道在泵浦源关闭时的输出信号的关闭输出功 率， 以及该每个监测信道在泵浦源打开时的输出信号的开泵输出功率；
将该每个监测信道的开泵输出功率与该每个监测信道的关泵输出功率 的差值， 分别确定为该每个监测信道在该每种泵浦源功率组合下的第一增 益。
具体地， 仍以图 3所示的拉曼光放大器 200为例进行说明， 其中， 将与 该输出功率峰值和输出功率谷值相应的三个传输通道 Psigl、 Psig2和 Psig3 都确定为监测信道。
在拉曼光放大器关闭两个泵浦源的情况下，通过测量拉曼光放大器的输 出信号， 可以获得输入的信号光经过传输光纤后的输出功率曲线 Poff, 由此 可以获得三个监测信道 Psigl、 Psig2、 Psig3在泵浦源关闭时的输出信号的关 闭输出功率， 分别记为 Psigloff 、 Psig2off 和 Psig3off , 其单位为 dBm。
之后， 可以打开拉曼光放大器的两个泵浦源， 使得拉曼光放大器对输入 的信号光进行放大， 此时， 通过第一光电探测器 261、 第二光电探测器 262、 第三光电探测器 263、 第四光电探测器 264和第五光电探测器 265 , 可以获 取该拉曼光放大器 200的第一泵浦源 221输出的泵浦光的功率 Ppumpl、 第 二泵浦源 222输出的泵浦光的功率 Ppump2、 短波段的带外 ASE噪声功率 Pasel、 长波段的带外 ASE噪声功率 Pase2、 以及该拉曼光放大器 200的输 出信号的功率 Pout。
应理解， 当拉曼光放大器具有一个泵浦源时， 或当拉曼光放大器具有三 个或更多的泵浦源时， 基于类似的构造， 确定拉曼光放大器的增益的装置可 以获取拉曼光放大器的当前增益参数信息， 为了筒洁在此不再赘述。
另外， 通过测量拉曼光放大器的输出信号， 可获得输入的信号光经过拉 曼光放大器放大后的输出功率曲线， 由此可以获得三个监测信道 Psigl、 Psig2、Psig3在泵浦源打开时的输出信号的开泵输出功率，分别记为 Psiglon、 Psig2on和 Psig3on,其单位为 dBm。 因而，三个监测信道 Psigl、 Psig2、 Psig3 在第一种泵浦源功率组合下的第一增益 Gl、 G2、 和 G3 (单位为 dB )分别 为：
Gl=Psiglon-Psigloff;
G2=Psig2on-Psig2off;
Figure imgf000021_0001
应理解， 当三个监测信道 Psigl、 Psig2、 Psig3在泵浦源关闭或打开时的 输出信号功率的单位为 W或 mW时， 该第一增益应该为泵浦源关闭和打开 时的输出信号功率的比值。 此外， 在第一泵浦源 221和第二泵浦源 222的正常工作范围内， 分别改 变第一泵浦源 221和第二泵浦源 222的功率，可以获得多种泵浦源功率组合， 此时其它与增益相关的其它参考保持不变。根据每种泵浦源功率组合下的该 第一增益和相应的第一增益参数信息， 可以通过拟合等方法建立该拉曼光放 大器的监控通道的增益与增益参数信息的对应关系。
因此，确定拉曼光放大器的增益的装置可以根据该每种泵浦源功率组合 下的该第一增益和该第一增益参数信息， 建立该拉曼光放大器的监控通道的 增益与增益参数信息的对应关系。 由此， 确定拉曼光放大器的增益的装置可 以实时获取拉曼光放大器的当前增益参数信息， 并根据该对应关系， 确定该 拉曼光放大器的监控通道的当前增益，从而可以根据该拉曼光放大器的监控 通道的当前增益与目标增益之间的大小关系，控制该拉曼光放大器的至少一 个泵浦源的功率， 由此能够控制该拉曼光放大器的增益。
在本发明实施例中， 除了可以考虑不同泵浦源的功率来拟合增益与增益 参数信息的对应关系之外， 还可以考虑不同的传输通道分布情况， 来拟合增 益与增益参数信息的对应关系， 以使得该对应关系能够更好地应用于不同的 应用场景，从而能够进一步提高控制拉曼光放大器的增益的准确性。应理解， 该传输通道分布变化既包括传输通道数量的增加或减少， 又包括传输通道数 量不变但各传输通道在频谱空间上的分布发生改变的情况等。
可选地， 在本发明实施例中， 该根据该每种泵浦源功率组合下的该第一 增益和该第一增益参数信息， 建立该拉曼光放大器的监控通道的增益与增益 参数信息的对应关系， 包括：
对于该拉曼光放大器具有的多种传输通道分布（不同的增掉波情况造成 的多种传输通道分布情况）， 分别确定该至少一个监测信道中的每个监测信 道在每种传输通道分布下的第二增益， 以及该拉曼光放大器在每种传输通道 分布下的第二增益参数信息；
根据该每种泵浦源功率组合下的该第一增益和该第一增益参数信息， 并 根据该每种传输通道分布下的该第二增益和该第二增益参数信息， 建立该拉 曼光放大器的监控通道的增益与增益参数信息的对应关系。
应理解， 拉曼光放大器由于调度、 断纤等原因造成增掉波， 会出现传输 通道分布变化的情况， 例如， 传输通道数量增加或减少的情况； 又例如， 传 输通道数量不变但各传输通道在频谱空间上的分布发生改变的情况等。 在本发明实施例中，例如可以通过改变传输通道的数量来设置多种传输 通道分布， 以确定该至少一个监测信道中的每个监测信道在每种传输通道分 布下的第二增益， 以及相应的第二增益参数信息， 从而确定拉曼光放大器的 监控通道的增益与增益参数信息的对应关系。
在本发明实施例中， 优选地， 确定拉曼光放大器的增益的装置可以根据 该每种泵浦源功率组合下的该第一增益和该第一增益参数信息， 并根据该每 种传输通道分布下的该第二增益和该第二增益参数信息， 建立该拉曼光放大 器的监控通道的增益与增益参数信息的对应关系。
应理解， 在本发明的各种实施例中， 上述各过程的序号的大小并不意味 着执行顺序的先后， 各过程的执行顺序应以其功能和内在逻辑确定， 而不应 对本发明实施例的实施过程构成任何限定。
因此， 本发明实施例的确定拉曼光放大器的增益的方法， 在通信网络运 行中， 实时获取拉曼光放大器的当前增益参数信息， 并根据该当前增益参数 信息， 以及该拉曼光放大器的监控通道的增益与增益参数信息的对应关系， 确定该监控通道的当前增益。 由于该当前增益参数信息包括该拉曼光放大器 的带外 ASE噪声功率信息、 至少一个泵浦源的泵浦光功率信息以及输出信 号功率信息， 因而根据本发明实施例的方法能够准确地确定监控通道的当前 增益， 由此能够准确地监控拉曼光放大器的增益谱， 并能够准确地将拉曼光 放大器的增益调节至目标增益，从而能够避免由于拉曼光放大器的增益变化 而导致的通信网络故障， 并能够提高拉曼光放大器的性能， 以及进一步提高 通信网络的传输性能。
上文中结合图 1至图 7 , 详细描述了根据本发明实施例的确定拉曼光放 大器的增益的方法， 下面将结合图 8至图 12,详细描述根据本发明实施例的 确定拉曼光放大器的增益的装置和拉曼光放大器。
如图 8所示， 根据本发明实施例的确定拉曼光放大器的增益的装置 300 包括：
用于接收信息的接收部件 310, 该接收部件具有至少一个输入端口 311 ; 以及
与该接收部件 310连接的处理部件 320, 其中， 该处理部件 320用于： 获取拉曼光放大器的当前增益参数信息， 该当前增益参数信息包括： 该 拉曼光放大器的带外放大自发辐射 ASE噪声功率信息、 该拉曼光放大器的 至少一个泵浦源的泵浦光功率信息以及该拉曼光放大器的输出信号功率信 息；
根据获取的该当前增益参数信息， 以及该拉曼光放大器的监控通道的增 益与增益参数信息的对应关系，确定该拉曼光放大器的该监控通道的当前增 益。
因此， 本发明实施例的确定拉曼光放大器的增益的装置， 在通信网络运 行中， 实时获取拉曼光放大器的当前增益参数信息， 并根据该当前增益参数 信息， 以及该拉曼光放大器的监控通道的增益与增益参数信息的对应关系， 确定该监控通道的当前增益。 由于该当前增益参数信息包括该拉曼光放大器 的带外 ASE噪声功率信息、 至少一个泵浦源的泵浦光功率信息以及输出信 号功率信息， 因而根据本发明实施例的装置能够准确地确定监控通道的当前 增益， 由此能够准确地监控拉曼光放大器的增益谱， 并能够准确地将拉曼光 放大器的增益调节至目标增益，从而能够避免由于拉曼光放大器的增益变化 而导致的通信网络故障， 并能够提高拉曼光放大器的性能， 以及进一步提高 通信网络的传输性能。
在本发明实施例中， 可选地， 该带外放大自发辐射 ASE噪声功率信息 包括短波段带外 ASE噪声功率、长波段带外 ASE噪声功率和带外 ASE噪声 总功率中的至少一种； 该至少一个泵浦源的泵浦光功率信息包括该至少一个 泵浦源的驱动电压、该至少一个泵浦源的驱动电流和该至少一个泵浦源输出 的泵浦光的功率中的至少一种。
应理解， 在本发明实施例中， "长波段" 和 "短波段" 是相对于拉曼光 放大器的数据信号通道的波长而言的。 例如， "长波段" 指比拉曼光放大器 的数据信号通道的波长更长的波段； "短波段" 指比拉曼光放大器的数据信 号通道的波长更短的波段； 又例如， 拉曼光放大器的数据信号通道的波长范 围为 1530nm至 1560nm,则 "长波段"的波长范围可以为 1560nm至 1580nm, "短波段" 的波长范围可以为 1510nm至 1530nm, 但本发明并不限于此。
应理解， 在本发明实施例中， 为了在不影响网络正常运行的情况下， 获 取拉曼光放大器的当前增益参数信息时， 通常可以采用分光的方法， 获取一 部分信号光以用于检测或测量， 因而通过该部分信号光进行测量得到的结果 与不进行分光以全部信号光进行测量得到的结果之间可能具有一比例系数， 该比例系数例如为分光器件的分光比等。 例如， 拉曼光放大器的输出信号功 率信息既可以包括全部输出信号的功率，也可以包括通过分光器件得到的一 部分输出信号的功率。
可选地， 该带外放大自发辐射 ASE噪声功率信息包括短波段带外 ASE 噪声功率和长波段带外 ASE噪声功率； 该至少一个泵浦源的泵浦光功率信 息包括该至少一个泵浦源输出的泵浦光的功率； 在该对应关系中， 该短波段 带外 ASE噪声功率、 该长波段带外 ASE噪声功率、 该至少一个泵浦源所输 出的泵浦光的功率和该输出信号功率信息的每种组合对应该监控通道的一 个增益。
可选地， 该带外放大自发辐射 ASE噪声功率信息包括短波段带外 ASE 噪声功率和长波段带外 ASE噪声功率； 该至少一个泵浦源的泵浦光功率信 息包括该至少一个泵浦源的驱动电压； 在该对应关系中， 该短波段带外 ASE 噪声功率、 该长波段带外 ASE噪声功率、 该至少一个泵浦源的驱动电压和 该输出信号功率信息的每种组合对应该监控通道的一个增益。
在本发明实施例中， 可选地， 该带外放大自发辐射 ASE噪声功率信息 包括短波段带外 ASE噪声功率和长波段带外 ASE噪声功率； 该至少一个泵 浦源的泵浦光功率信息包括该至少一个泵浦源的驱动电流； 在该对应关系 中， 该短波段带外 ASE噪声功率、 该长波段带外 ASE噪声功率、 该至少一 个泵浦源的驱动电流和该输出信号功率信息的每种组合对应该监控通道的 一个增益。
还应理解， 在本发明实施例中， 获取的拉曼光放大器的当前增益参数信 息既可以包括对一部分信号光进行测量得到的增益参数信息，也可以包括对 全部信号光进行测量得到的增益参数信息； 相应地， 在本发明实施例中， 用 于确定拉曼光放大器的监控通道的当前增益的对应关系，既可以包括一部分 信号光的增益参数信息与拉曼光放大器的监控通道的增益的对应关系，也可 以包括全部信号光的增益参数信息与拉曼光放大器的监控通道的增益的对 应关系， 但本发明并不限于此。
可选地， 该处理部件 320还用于： 通过控制该拉曼光放大器的该至少一 个泵浦源的泵浦光功率，将该拉曼光放大器的该监控通道的增益调节至目标 增益。
可选地， 该处理部件 320控制该拉曼光放大器的该至少一个泵浦源的泵 浦光功率， 具体包括： 确定该拉曼光放大器的该监控通道的当前增益与该目标增益之间的大 小关系；
在确定的该监控通道的当前增益大于该目标增益时， 降低该至少一个泵 浦源的泵浦光功率； 或在确定的该监控通道的当前增益小于该目标增益时， 增加该至少一个泵浦源的泵浦光功率。
可选地， 在本发明实施例中， 该处理部件 320还用于：
在确定该拉曼光放大器的该监控通道的当前增益之前， 建立包括该监控 通道的至少一个监控通道的增益与增益参数信息的对应关系。
可选地， 在本发明实施例中， 该至少一个监控通道包括与该拉曼光放大 器的输出功率峰值和 /或输出功率谷值相应的传输通道。
可选地， 在本发明实施例中， 如图 9所示， 该装置 300还包括： 至少一个输出端口 330, 用于向该拉曼光放大器的至少一个泵浦源输出 驱动电压或驱动电流;
其中， 该处理部件 320包括： 存储器 321和处理器 322, 该存储器 321 用于存储指令以及该对应关系，该处理器 322用于执行该存储器存储的指令。
可选地， 在本发明实施例中， 该装置 300为用于确定后向拉曼光放大器 的增益的装置。
应理解，在本发明实施例中，该处理器 322可以是中央处理单元（Central Processing Unit, 筒称为 "CPU" ), 该处理器 322还可以是其他通用处理器、 数字信号处理器（ DSP )、专用集成电路（ ASIC )、现成可编程门阵列（ FPGA ) 或者其他可编程逻辑器件、 分立门或者晶体管逻辑器件、 分立硬件组件等。 通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
该存储器 321可以包括只读存储器和随机存取存储器， 并向处理器 710 提供指令和数据。存储器 321的一部分还可以包括非易失性随机存取存储器。 例如， 存储器 321还可以存储设备类型的信息。
应理解， 在本发明实施例中， 存储器 321和处理器 322可以通过总线系 统连接， 该总线系统除包括数据总线之外， 还可以包括电源总线、 控制总线 和状态信号总线等。 但是为了清楚说明起见， 本发明实施例仅以总线系统为 例进行说明。
在实现过程中， 上述方法的各步骤可以通过处理器 710中的硬件的集成 逻辑电路或者软件形式的指令完成。结合本发明实施例所公开的方法的步骤 可以直接体现为硬件处理器执行完成， 或者用处理器中的硬件及软件模块组 合执行完成。 软件模块可以位于随机存储器， 闪存、 只读存储器， 可编程只 读存储器或者电可擦写可编程存储器、 寄存器等本领域成熟的存储介质中。 该存储介质位于存储器 720, 处理器 710读取存储器 720中的信息， 结合其 硬件完成上述方法的步骤。 为避免重复， 这里不再详细描述。
在本发明实施例中， 可选地， 该处理部件 320建立包括该监控通道的至 少一个监控通道的增益与增益参数信息的对应关系， 包括：
在该拉曼光放大器的多个传输信道中，确定用于监测增益的至少一个监 测信道；
对于该拉曼光放大器的泵浦源具有的多种泵浦源功率组合， 分别确定该 至少一个监测信道中的每个监测信道在每种泵浦源功率组合下的第一增益， 以及该拉曼光放大器在每种泵浦源功率组合下的第一增益参数信息；
根据该每种泵浦源功率组合下的该第一增益和该第一增益参数信息， 建 立该拉曼光放大器的监控通道的增益与增益参数信息的对应关系。
在本发明实施例中， 可选地， 该处理部件 320确定用于监测增益的至少 一个监测信道具体包括：
将与该拉曼光放大器的输出功率峰值和 /或输出功率谷值相应的传输通 道， 确定为该至少一个监测信道中的监测信道。
在本发明实施例中， 可选地， 可选地， 该处理部件 320确定用于监测增 益的至少一个监测信道具体包括：
将与该拉曼光放大器的特定输出功率相应的传输通道，确定为该至少一 个监测信道中的监测信道， 其中该特定输出功率与该拉曼光放大器的输出功 率峰值或输出功率谷值相差预定功率值。
可选地， 在本发明实施例中， 该处理部件 320具体用于：
用于对于该拉曼光放大器的泵浦源的每种泵浦源功率组合， 分别确定该 至少一个监测信道中的每个监测信道在泵浦源关闭时的输出信号的关闭输 出功率， 以及该每个监测信道在泵浦源打开时的输出信号的开泵输出功率； 用于将该每个监测信道的开泵输出功率与该每个监测信道的关泵输出 功率的差值， 分别确定为该每个监测信道在该每种泵浦源功率组合下的第一 增益。
可选地， 在本发明实施例中， 该处理部件 320具体用于： 用于对于该拉曼光放大器具有的多种传输通道分布，分别确定该至少一 个监测信道中的每个监测信道在每种传输通道分布下的第二增益， 以及该拉 曼光放大器在每种传输通道分布下的第二增益参数信息；
其中， 该处理部件 320具体用于： 根据该每种泵浦源功率组合下的该第 一增益和该第一增益参数信息， 并根据该每种传输通道分布下的该第二增益 和该第二增益参数信息， 建立该拉曼光放大器的监控通道的增益与增益参数 信息的对应关系。
应理解，根据本发明实施例的确定拉曼光放大器的增益的装置 300可对 应于本发明实施例中的方法的执行主体， 并且装置 300中的各个模块的上述 和其它操作和 /或功能分别为了实现图 1至图 7中的各个方法的相应流程，为 了筒洁， 在此不再赘述。
因此， 本发明实施例的确定拉曼光放大器的增益的装置， 在通信网络运 行中， 实时获取拉曼光放大器的当前增益参数信息， 并根据该当前增益参数 信息， 以及该拉曼光放大器的监控通道的增益与增益参数信息的对应关系， 确定该监控通道的当前增益。 由于该当前增益参数信息包括该拉曼光放大器 的带外 ASE噪声功率信息、 至少一个泵浦源的泵浦光功率信息以及输出信 号功率信息， 因而根据本发明实施例的装置能够准确地确定监控通道的当前 增益， 由此能够准确地监控拉曼光放大器的增益谱， 并能够准确地将拉曼光 放大器的增益调节至目标增益，从而能够避免由于拉曼光放大器的增益变化 而导致的通信网络故障， 并能够提高拉曼光放大器的性能， 以及进一步提高 通信网络的传输性能。
如图 10所示，本发明实施例还提供了一种拉曼光放大器 500,该拉曼光 放大器 500包括：
根据本发明实施例的确定拉曼光放大器的增益的装置 510; 和
用于给该拉曼光放大器 500进行泵浦的至少一个泵浦源 520,
其中， 该装置 510包括： 用于接收信息的接收部件， 该接收部件具有至 少一个输入端口； 以及与该接收部件连接的处理部件， 其中， 该处理部件用 于： 获取拉曼光放大器的当前增益参数信息， 该当前增益参数信息包括： 该 拉曼光放大器的带外放大自发辐射 ASE噪声功率信息、 该拉曼光放大器的 至少一个泵浦源的泵浦光功率信息以及该拉曼光放大器的输出信号功率信 息； 根据获取的该当前增益参数信息， 以及该拉曼光放大器的监控通道的增 益与增益参数信息的对应关系，确定该拉曼光放大器的该监控通道的当前增 益。
因此， 本发明实施例的拉曼光放大器， 在通信网络运行中， 实时获取拉 曼光放大器的当前增益参数信息， 并根据该当前增益参数信息， 以及该拉曼 光放大器的监控通道的增益与增益参数信息的对应关系，确定该监控通道的 当前增益。 由于该当前增益参数信息包括该拉曼光放大器的带外 ASE噪声 功率信息、 至少一个泵浦源的泵浦光功率信息以及输出信号功率信息， 因而 根据本发明实施例的拉曼光放大器能够准确地确定监控通道的当前增益， 由 此能够准确地监控拉曼光放大器的增益谱， 并能够准确地将拉曼光放大器的 增益调节至目标增益，从而能够避免由于拉曼光放大器的增益变化而导致的 通信网络故障， 并能够提高拉曼光放大器的性能， 以及进一步提高通信网络 的传输性能。
在本发明实施例中， 如图 11所示， 可选地， 该拉曼光放大器 500还包 括：
耦合器 530, 用于将该至少一个泵浦源输出的泵浦光耦合到该拉曼光放 大器 500的输入光纤；
波长选择器 540, 用于获取该拉曼光放大器 500 的带外放大自发辐射 ASE噪声；
第一光电探测器 550, 用于将该带外 ASE噪声转换为第一电信号， 并将 该第一电信号输入至该装置 510的该处理部件；
第二光电探测器 560, 用于将该拉曼光放大器 500的输出信号转换为第 二电信号， 并将该第二电信号输入至该装置 510的该处理部件。
在本发明实施例中， 如图 11所示， 可选地， 该拉曼光放大器 500还包 括： 至少一个分光器 570和第三光电探测器 580;
其中， 该至少一个分光器 550用于将该至少一个泵浦源 520输出的泵浦 光分成两部分， 一部分泵浦光输入至该拉曼光放大器 500的输入光纤； 另一 部分泵浦光输入至该第三光电探测器 580;
该第三光电探测器 580用于将接收的光信号转换为第三电信号， 并将该 第三电信号输入至该装置 510的该处理部件。
在本发明实施例中， 可选地， 该带外放大自发辐射 ASE噪声功率信息 包括短波段带外 ASE噪声功率、长波段带外 ASE噪声功率和带外 ASE噪声 总功率中的至少一种； 该至少一个泵浦源的泵浦光功率信息包括该至少一个 泵浦源的驱动电压、该至少一个泵浦源的驱动电流和该至少一个泵浦源输出 的泵浦光的功率中的至少一种。
在本发明实施例中， 可选地， 该带外放大自发辐射 ASE噪声功率信息 包括短波段带外 ASE噪声功率和长波段带外 ASE噪声功率； 该至少一个泵 浦源的泵浦光功率信息包括该至少一个泵浦源输出的泵浦光的功率； 在该对 应关系中， 该短波段带外 ASE噪声功率、 该长波段带外 ASE噪声功率、 该 至少一个泵浦源所输出的泵浦光的功率和该输出信号功率信息的每种组合 对应该监控通道的一个增益。
在本发明实施例中， 可选地， 该带外放大自发辐射 ASE噪声功率信息 包括短波段带外 ASE噪声功率和长波段带外 ASE噪声功率； 该至少一个泵 浦源的泵浦光功率信息包括该至少一个泵浦源的驱动电压； 在该对应关系 中， 该短波段带外 ASE噪声功率、 该长波段带外 ASE噪声功率、 该至少一 个泵浦源的驱动电压和该输出信号功率信息的每种组合对应该监控通道的 一个增益。
在本发明实施例中， 可选地， 该带外放大自发辐射 ASE噪声功率信息 包括短波段带外 ASE噪声功率和长波段带外 ASE噪声功率； 该至少一个泵 浦源的泵浦光功率信息包括该至少一个泵浦源的驱动电流； 在该对应关系 中， 该短波段带外 ASE噪声功率、 该长波段带外 ASE噪声功率、 该至少一 个泵浦源的驱动电流和该输出信号功率信息的每种组合对应该监控通道的 一个增益。
在本发明实施例中， 可选地， 该处理部件还用于： 通过控制该拉曼光放 大器的该至少一个泵浦源的泵浦光功率，将该拉曼光放大器的该监控通道的 增益调节至目标增益。
在本发明实施例中， 可选地， 该处理部件控制该拉曼光放大器的该至少 一个泵浦源的泵浦光功率， 具体包括：
确定该拉曼光放大器的该监控通道的当前增益与该目标增益之间的大 小关系；
在确定的该监控通道的当前增益大于该目标增益时， 降低该至少一个泵 浦源的泵浦光功率； 或在确定的该监控通道的当前增益小于该目标增益时， 增加该至少一个泵浦源的泵浦光功率。 在本发明实施例中， 可选地， 该处理部件还用于：
在确定该拉曼光放大器的该监控通道的当前增益之前， 建立包括该监控 通道的至少一个监控通道的增益与增益参数信息的对应关系。
在本发明实施例中， 可选地， 该至少一个监控通道包括与该拉曼光放大 器的输出功率峰值和 /或输出功率谷值相应的传输通道。
在本发明实施例中，可选地，该拉曼光放大器 500为后向拉曼光放大器。 可选地， 作为一个实施例， 该处理部件建立该拉曼光放大器的监控通道 的增益与增益参数信息的对应关系， 包括：
在该拉曼光放大器的多个传输信道中，确定用于监测增益的至少一个监 测信道；
对于该拉曼光放大器的泵浦源具有的多种泵浦源功率组合， 分别确定该 至少一个监测信道中的每个监测信道在每种泵浦源功率组合下的第一增益， 以及该拉曼光放大器在每种泵浦源功率组合下的第一增益参数信息；
根据该每种泵浦源功率组合下的该第一增益和该第一增益参数信息， 建 立该拉曼光放大器的监控通道的增益与增益参数信息的对应关系。
可选地， 作为一个实施例， 该处理部件分别确定该至少一个监测信道中 的每个监测信道在每种泵浦源功率组合下的第一增益， 包括：
对于该拉曼光放大器的泵浦源的每种泵浦源功率组合， 分别确定该至少 一个监测信道中的每个监测信道在泵浦源关闭时的输出信号的关闭输出功 率， 以及该每个监测信道在泵浦源打开时的输出信号的开泵输出功率；
将该每个监测信道的开泵输出功率与该每个监测信道的关泵输出功率 的差值， 分别确定为该每个监测信道在该每种泵浦源功率组合下的第一增 益。
可选地， 作为一个实施例， 该处理部件根据该每种泵浦源功率组合下的 该第一增益和该第一增益参数信息，建立该拉曼光放大器的监控通道的增益 与增益参数信息的对应关系， 包括：
对于该拉曼光放大器具有的多种传输通道分布， 分别确定该至少一个监 测信道中的每个监测信道在每种传输通道分布下的第二增益， 以及该拉曼光 放大器在每种传输通道分布下的第二增益参数信息；
根据该每种泵浦源功率组合下的该第一增益和该第一增益参数信息， 并 根据该每种传输通道分布下的该第二增益和该第二增益参数信息， 建立该拉 曼光放大器的监控通道的增益与增益参数信息的对应关系。
可选地， 作为一个实施例， 该处理部件确定用于监测增益的至少一个监 测信道， 包括：
将与该拉曼光放大器的输出功率峰值和 /或输出功率谷值相应的传输通 道， 确定为该至少一个监测信道中的监测信道。
可选地， 作为一个实施例， 该处理部件确定用于监测增益的至少一个监 测信道， 包括：
将与该拉曼光放大器的特定输出功率相应的传输通道，确定为该至少一 个监测信道中的监测信道， 其中该特定输出功率与该拉曼光放大器的输出功 率峰值或输出功率谷值相差预定功率值。
应理解，根据本发明实施例的拉曼光放大器包括的装置 510可对应于本 发明实施例中的方法的执行主体， 以及对应于根据本发明实施例的用于确定 拉曼光放大器的装置 300,并且装置 510中的各个模块的上述和其它操作和 / 或功能分别为了实现图 1至图 7中的各个方法的相应流程， 为了筒洁， 在此 不再赘述。
因此， 本发明实施例的拉曼光放大器， 在通信网络运行中， 实时获取拉 曼光放大器的当前增益参数信息， 并根据该当前增益参数信息， 以及该拉曼 光放大器的监控通道的增益与增益参数信息的对应关系，确定该监控通道的 当前增益。 由于该当前增益参数信息包括该拉曼光放大器的带外 ASE噪声 功率信息、 至少一个泵浦源的泵浦光功率信息以及输出信号功率信息， 因而 根据本发明实施例的拉曼光放大器能够准确地确定监控通道的当前增益， 由 此能够准确地监控拉曼光放大器的增益谱， 并能够准确地将拉曼光放大器的 增益调节至目标增益，从而能够避免由于拉曼光放大器的增益变化而导致的 通信网络故障， 并能够提高拉曼光放大器的性能， 以及进一步提高通信网络 的传输性能。
应理解， 在本发明实施例中， "与 A相应的 B"表示 B与 A相关联， 根 据 A可以确定 B。 但还应理解， 根据 A确定 B并不意味着仅仅根据 A确定 B, 还可以根据 A和 /或其它信息确定
另外， 本文中术语 "系统" 和 "网络" 在本文中常被可互换使用。 本文 中术语 "和 /或"， 仅仅是一种描述关联对象的关联关系， 表示可以存在三种 关系， 例如， A和 /或 B, 可以表示： 单独存在 A , 同时存在 A和 B, 单独存 在 B这三种情况。另外，本文中字符 "/" ,一般表示前后关联对象是一种 "或" 的关系。
如图 12所示， 本发明实施例还提供了一种确定拉曼光放大器的增益的 装置 700, 该装置 700包括处理器 710、 存储器 720和总线系统 730。 其中， 该处理器 710和该存储器 720通过该总线系统 730相连， 该存储器 720用于 存储指令， 该处理器 710用于执行该存储器 720存储的指令。 其中， 该处理 器 710用于：
获取拉曼光放大器的当前增益参数信息， 该当前增益参数信息包括： 该 拉曼光放大器的带外放大自发辐射 ASE噪声功率信息、 该拉曼光放大器的 至少一个泵浦源的泵浦光功率信息以及该拉曼光放大器的输出信号功率信 息；
根据该当前增益参数信息， 以及该拉曼光放大器的监控通道的增益与增 益参数信息的对应关系， 确定该拉曼光放大器的该监控通道的当前增益。
因此， 本发明实施例的确定拉曼光放大器的增益的装置， 在通信网络运 行中， 实时获取拉曼光放大器的当前增益参数信息， 并根据该当前增益参数 信息， 以及该拉曼光放大器的监控通道的增益与增益参数信息的对应关系， 确定该监控通道的当前增益。 由于该当前增益参数信息包括该拉曼光放大器 的带外 ASE噪声功率信息、 至少一个泵浦源的泵浦光功率信息以及输出信 号功率信息， 因而根据本发明实施例的装置能够准确地确定监控通道的当前 增益， 由此能够准确地监控拉曼光放大器的增益谱， 并能够准确地将拉曼光 放大器的增益调节至目标增益，从而能够避免由于拉曼光放大器的增益变化 而导致的通信网络故障， 并能够提高拉曼光放大器的性能， 以及进一步提高 通信网络的传输性能。
应理解，在本发明实施例中，该处理器 710可以是中央处理单元（ Central Processing Unit, 筒称为 "CPU" ), 该处理器 710还可以是其他通用处理器、 数字信号处理器（DSP )、专用集成电路（ASIC )、现成可编程门阵列（FPGA ) 或者其他可编程逻辑器件、 分立门或者晶体管逻辑器件、 分立硬件组件等。 通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
该存储器 720可以包括只读存储器和随机存取存储器， 并向处理器 710 提供指令和数据。存储器 720的一部分还可以包括非易失性随机存取存储器。 例如， 存储器 720还可以存储设备类型的信息。 该总线系统 730除包括数据总线之外， 还可以包括电源总线、 控制总线 和状态信号总线等。 但是为了清楚说明起见， 在图中将各种总线都标为总线 系统 730。
在实现过程中， 上述方法的各步骤可以通过处理器 710中的硬件的集成 逻辑电路或者软件形式的指令完成。结合本发明实施例所公开的方法的步骤 可以直接体现为硬件处理器执行完成， 或者用处理器中的硬件及软件模块组 合执行完成。 软件模块可以位于随机存储器， 闪存、 只读存储器， 可编程只 读存储器或者电可擦写可编程存储器、 寄存器等本领域成熟的存储介质中。 该存储介质位于存储器 720, 处理器 710读取存储器 720中的信息， 结合其 硬件完成上述方法的步骤。 为避免重复， 这里不再详细描述。
可选地， 作为一个实施例， 该带外放大自发辐射 ASE噪声功率信息包 括短波段带外 ASE噪声功率、长波段带外 ASE噪声功率和带外 ASE噪声总 功率中的至少一种； 该至少一个泵浦源的泵浦光功率信息包括该至少一个泵 浦源的驱动电压、该至少一个泵浦源的驱动电流和该至少一个泵浦源输出的 泵浦光的功率中的至少一种。
可选地， 作为一个实施例， 该带外放大自发辐射 ASE噪声功率信息包 括短波段带外 ASE噪声功率和长波段带外 ASE噪声功率； 该至少一个泵浦 源的泵浦光功率信息包括该至少一个泵浦源输出的泵浦光的功率； 在该对应 关系中， 该短波段带外 ASE噪声功率、 该长波段带外 ASE噪声功率、 该至 少一个泵浦源所输出的泵浦光的功率和该输出信号功率信息的每种组合对 应该监控通道的一个增益。
可选地， 作为一个实施例， 该带外放大自发辐射 ASE噪声功率信息包 括短波段带外 ASE噪声功率和长波段带外 ASE噪声功率； 该至少一个泵浦 源的泵浦光功率信息包括该至少一个泵浦源的驱动电压； 在该对应关系中， 该短波段带外 ASE噪声功率、 该长波段带外 ASE噪声功率、 该至少一个泵 浦源的驱动电压和该输出信号功率信息的每种组合对应该监控通道的一个 增益。
可选地， 作为一个实施例， 该带外放大自发辐射 ASE噪声功率信息包 括短波段带外 ASE噪声功率和长波段带外 ASE噪声功率； 该至少一个泵浦 源的泵浦光功率信息包括该至少一个泵浦源的驱动电流； 在该对应关系中， 该短波段带外 ASE噪声功率、 该长波段带外 ASE噪声功率、 该至少一个泵 浦源的驱动电流和该输出信号功率信息的每种组合对应该监控通道的一个 增益。
可选地， 作为一个实施例， 该处理器 710还用于： 通过控制该拉曼光放 大器的该至少一个泵浦源的泵浦光功率，将该拉曼光放大器的该监控通道的 增益调节至目标增益
可选地， 作为一个实施例， 该处理器 710控制该拉曼光放大器的该至少 一个泵浦源的泵浦光功率， 包括：
确定该拉曼光放大器的该监控通道的当前增益与该目标增益之间的大 小关系；
在该监控通道的当前增益大于该目标增益时， 降低该至少一个泵浦源的 泵浦光功率； 或在该监控通道的当前增益小于该目标增益时， 增加该至少一 个泵浦源的泵浦光功率。
可选地， 作为一个实施例， 该处理器 710还用于： 在确定该拉曼光放大 器的该监控通道的当前增益之前， 建立包括该监控通道的至少一个监控通道 的增益与增益参数信息的对应关系。
可选地，作为一个实施例，该装置 700还包括接收器 740和发送器 750, 其中该接收器 740 用于接收拉曼光放大器的当前增益参数信息； 该发送器 750用于向泵浦源发送驱动电压或驱动电流， 以改变泵浦源输出的泵浦光的 功率。
可选地， 作为一个实施例， 该处理器 710建立该拉曼光放大器的监控通 道的增益与增益参数信息的对应关系， 包括：
在该拉曼光放大器的多个传输信道中，确定用于监测增益的至少一个监 测信道；
对于该拉曼光放大器的泵浦源具有的多种泵浦源功率组合， 分别确定该 至少一个监测信道中的每个监测信道在每种泵浦源功率组合下的第一增益， 以及该拉曼光放大器在每种泵浦源功率组合下的第一增益参数信息；
根据该每种泵浦源功率组合下的该第一增益和该第一增益参数信息， 建 立该拉曼光放大器的监控通道的增益与增益参数信息的对应关系。
可选地， 作为一个实施例， 该处理器 710分别确定该至少一个监测信道 中的每个监测信道在每种泵浦源功率组合下的第一增益， 包括：
对于该拉曼光放大器的泵浦源的每种泵浦源功率组合， 分别确定该至少 一个监测信道中的每个监测信道在泵浦源关闭时的输出信号的关闭输出功 率， 以及该每个监测信道在泵浦源打开时的输出信号的开泵输出功率；
将该每个监测信道的开泵输出功率与该每个监测信道的关泵输出功率 的差值， 分别确定为该每个监测信道在该每种泵浦源功率组合下的第一增 益。
可选地， 作为一个实施例， 该处理器 710根据该每种泵浦源功率组合下 的该第一增益和该第一增益参数信息， 建立该拉曼光放大器的监控通道的增 益与增益参数信息的对应关系， 包括：
对于该拉曼光放大器具有的多种传输通道分布， 分别确定该至少一个监 测信道中的每个监测信道在每种传输通道分布下的第二增益， 以及该拉曼光 放大器在每种传输通道分布下的第二增益参数信息；
根据该每种泵浦源功率组合下的该第一增益和该第一增益参数信息， 并 根据该每种传输通道分布下的该第二增益和该第二增益参数信息， 建立该拉 曼光放大器的监控通道的增益与增益参数信息的对应关系。
可选地， 作为一个实施例， 该处理器 710确定用于监测增益的至少一个 监测信道， 包括：
将与该拉曼光放大器的输出功率峰值和 /或输出功率谷值相应的传输通 道， 确定为该至少一个监测信道中的监测信道。
可选地， 作为一个实施例， 该处理器 710确定用于监测增益的至少一个 监测信道， 包括：
将与该拉曼光放大器的特定输出功率相应的传输通道，确定为该至少一 个监测信道中的监测信道， 其中该特定输出功率与该拉曼光放大器的输出功 率峰值或输出功率谷值相差预定功率值。
应理解，根据本发明实施例的确定拉曼光放大器的增益的装置 700可对 应于本发明实施例中的方法的执行主体， 以及可以对应于根据本发明实施例 的装置 300和装置 510, 并且装置 700 中的各个模块的上述和其它操作和 / 或功能分别为了实现图 1至图 7中的各个方法的相应流程， 为了筒洁， 在此 不再赘述。
因此， 本发明实施例的确定拉曼光放大器的增益的装置， 在通信网络运 行中， 实时获取拉曼光放大器的当前增益参数信息， 并根据该当前增益参数 信息， 以及该拉曼光放大器的监控通道的增益与增益参数信息的对应关系， 确定该监控通道的当前增益。 由于该当前增益参数信息包括该拉曼光放大器 的带外 ASE噪声功率信息、 至少一个泵浦源的泵浦光功率信息以及输出信 号功率信息， 因而根据本发明实施例的装置能够准确地确定监控通道的当前 增益， 由此能够准确地监控拉曼光放大器的增益谱， 并能够准确地将拉曼光 放大器的增益调节至目标增益，从而能够避免由于拉曼光放大器的增益变化 而导致的通信网络故障， 并能够提高拉曼光放大器的性能， 以及进一步提高 通信网络的传输性能。
本领域普通技术人员可以意识到， 结合本文中所公开的实施例描述的各 示例的单元及算法步骤， 能够以电子硬件、 计算机软件或者二者的结合来实 现， 为了清楚地说明硬件和软件的可互换性， 在上述说明中已经按照功能一 般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执 行， 取决于技术方案的特定应用和设计约束条件。 专业技术人员可以对每个 特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超 出本发明的范围。
所属领域的技术人员可以清楚地了解到， 为了描述的方便和筒洁， 上述 描述的系统、 装置和单元的具体工作过程， 可以参考前述方法实施例中的对 应过程， 在此不再赘述。
在本申请所提供的几个实施例中， 应该理解到， 所揭露的系统、 装置和 方法， 可以通过其它的方式实现。 例如， 以上所描述的装置实施例仅仅是示 意性的， 例如， 所述单元的划分， 仅仅为一种逻辑功能划分， 实际实现时可 以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个 系统， 或一些特征可以忽略， 或不执行。 另外， 所显示或讨论的相互之间的 耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或 通信连接， 也可以是电的， 机械的或其它的形式连接。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作 为单元显示的部件可以是或者也可以不是物理单元， 即可以位于一个地方， 或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或 者全部单元来实现本发明实施例方案的目的。
另外， 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中， 也可以是各个单元单独物理存在， 也可以是两个或两个以上单元集成在 一个单元中。 上述集成的单元既可以采用硬件的形式实现， 也可以采用软件 功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销 售或使用时， 可以存储在一个计算机可读取存储介质中。 基于这样的理解， 本发明的技术方案本质上或者说对现有技术做出贡献的部分， 或者该技术方 案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在 一个存储介质中， 包括若干指令用以使得一台计算机设备（可以是个人计算 机， 服务器， 或者网络设备等）执行本发明各个实施例所述方法的全部或部 分步骤。 而前述的存储介质包括： U盘、 移动硬盘、 只读存储器（ROM, Read-Only Memory )、 随机存取存者器 ( RAM, Random Access Memory )、 磁碟或者光盘等各种可以存储程序代码的介质。
以上所述， 仅为本发明的具体实施方式， 但本发明的保护范围并不局限 于此， 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可轻易 想到各种等效的修改或替换， 这些修改或替换都应涵盖在本发明的保护范围 之内。 因此， 本发明的保护范围应以权利要求的保护范围为准。

Claims

权利要求
1、 一种确定拉曼光放大器的增益的方法， 其特征在于， 所述方法包括： 获取拉曼光放大器的当前增益参数信息， 所述当前增益参数信息包括： 所述拉曼光放大器的带外放大自发辐射 ASE噪声功率信息、 所述拉曼光放 大器的至少一个泵浦源的泵浦光功率信息以及所述拉曼光放大器的输出信 号功率信息；
根据所述当前增益参数信息， 以及所述拉曼光放大器的监控通道的增益 与增益参数信息的对应关系，确定所述拉曼光放大器的所述监控通道的当前 增益。
2、 根据权利要求 1所述的方法， 其特征在于， 所述带外放大自发辐射
ASE噪声功率信息包括短波段带外 ASE噪声功率、 长波段带外 ASE噪声功 率和带外 ASE噪声总功率中的至少一种； 所述至少一个泵浦源的泵浦光功 率信息包括所述至少一个泵浦源的驱动电压、所述至少一个泵浦源的驱动电 流和所述至少一个泵浦源输出的泵浦光的功率中的至少一种。
3、 根据权利要求 1所述的方法， 其特征在于， 所述带外放大自发辐射
ASE噪声功率信息包括短波段带外 ASE噪声功率和长波段带外 ASE噪声功 率； 所述至少一个泵浦源的泵浦光功率信息包括所述至少一个泵浦源输出的 泵浦光的功率； 在所述对应关系中， 所述短波段带外 ASE噪声功率、 所述 长波段带外 ASE噪声功率、 所述至少一个泵浦源所输出的泵浦光的功率和 所述输出信号功率信息的每种组合对应所述监控通道的一个增益。
4、 根据权利要求 1所述的方法， 其特征在于， 所述带外放大自发辐射 ASE噪声功率信息包括短波段带外 ASE噪声功率和长波段带外 ASE噪声功 率； 所述至少一个泵浦源的泵浦光功率信息包括所述至少一个泵浦源的驱动 电压； 在所述对应关系中， 所述短波段带外 ASE噪声功率、 所述长波段带 外 ASE噪声功率、 所述至少一个泵浦源的驱动电压和所述输出信号功率信 息的每种组合对应所述监控通道的一个增益。
5、 根据权利要求 1所述的方法， 其特征在于， 所述带外放大自发辐射 ASE噪声功率信息包括短波段带外 ASE噪声功率和长波段带外 ASE噪声功 率； 所述至少一个泵浦源的泵浦光功率信息包括所述至少一个泵浦源的驱动 电流； 在所述对应关系中， 所述短波段带外 ASE噪声功率、 所述长波段带 外 ASE噪声功率、 所述至少一个泵浦源的驱动电流和所述输出信号功率信 息的每种组合对应所述监控通道的一个增益。
6、 根据权利要求 1至 5中任一项所述的方法， 其特征在于， 所述方法 还包括：
通过控制所述拉曼光放大器的所述至少一个泵浦源的泵浦光功率，将所 述拉曼光放大器的所述监控通道的增益调节至目标增益。
7、 根据权利要求 6所述的方法， 其特征在于， 所述控制所述拉曼光放 大器的所述至少一个泵浦源的泵浦光功率， 包括：
确定所述拉曼光放大器的所述监控通道的当前增益与所述目标增益之 间的大小关系；
在所述监控通道的当前增益大于所述目标增益时， 降低所述至少一个泵 浦源的泵浦光功率； 或在所述监控通道的当前增益小于所述目标增益时， 增 加所述至少一个泵浦源的泵浦光功率。
8、 根据权利要求 1至 7中任一项所述的方法， 其特征在于， 所述方法 还包括：
在确定所述拉曼光放大器的所述监控通道的当前增益之前， 建立包括所 述监控通道的至少一个监控通道的增益与增益参数信息的对应关系。
9、 根据权利要求 8所述的方法， 其特征在于， 所述至少一个监控通道 包括与所述拉曼光放大器的输出功率峰值和 /或输出功率谷值相应的传输通 道。
10、一种确定拉曼光放大器的增益的装置，其特征在于，所述装置包括： 用于接收信息的接收部件， 所述接收部件具有至少一个输入端口； 以及 与所述接收部件连接的处理部件， 其中， 所述处理部件用于：
获取拉曼光放大器的当前增益参数信息， 所述当前增益参数信息包括： 所述拉曼光放大器的带外放大自发辐射 ASE噪声功率信息、 所述拉曼光放 大器的至少一个泵浦源的泵浦光功率信息以及所述拉曼光放大器的输出信 号功率信息；
根据获取的所述当前增益参数信息， 以及所述拉曼光放大器的监控通道 的增益与增益参数信息的对应关系，确定所述拉曼光放大器的所述监控通道 的当前增益。
11、 根据权利要求 10所述的装置， 其特征在于， 所述带外放大自发辐 射 ASE噪声功率信息包括短波段带外 ASE噪声功率、长波段带外 ASE噪声 功率和带外 ASE噪声总功率中的至少一种； 所述至少一个泵浦源的泵浦光 功率信息包括所述至少一个泵浦源的驱动电压、所述至少一个泵浦源的驱动 电流和所述至少一个泵浦源输出的泵浦光的功率中的至少一种。
12、 根据权利要求 10所述的装置， 其特征在于， 所述带外放大自发辐 射 ASE噪声功率信息包括短波段带外 ASE噪声功率和长波段带外 ASE噪声 功率； 所述至少一个泵浦源的泵浦光功率信息包括所述至少一个泵浦源输出 的泵浦光的功率； 在所述对应关系中， 所述短波段带外 ASE噪声功率、 所 述长波段带外 ASE噪声功率、 所述至少一个泵浦源所输出的泵浦光的功率 和所述输出信号功率信息的每种组合对应所述监控通道的一个增益。
13、 根据权利要求 10所述的装置， 其特征在于， 所述带外放大自发辐 射 ASE噪声功率信息包括短波段带外 ASE噪声功率和长波段带外 ASE噪声 功率； 所述至少一个泵浦源的泵浦光功率信息包括所述至少一个泵浦源的驱 动电压； 在所述对应关系中， 所述短波段带外 ASE噪声功率、 所述长波段 带外 ASE噪声功率、 所述至少一个泵浦源的驱动电压和所述输出信号功率 信息的每种组合对应所述监控通道的一个增益。
14、 根据权利要求 10所述的装置， 其特征在于， 所述带外放大自发辐 射 ASE噪声功率信息包括短波段带外 ASE噪声功率和长波段带外 ASE噪声 功率； 所述至少一个泵浦源的泵浦光功率信息包括所述至少一个泵浦源的驱 动电流； 在所述对应关系中， 所述短波段带外 ASE噪声功率、 所述长波段 带外 ASE噪声功率、 所述至少一个泵浦源的驱动电流和所述输出信号功率 信息的每种组合对应所述监控通道的一个增益。
15、 根据权利要求 10至 14中任一项所述的装置， 其特征在于， 所述处 理部件还用于： 通过控制所述拉曼光放大器的所述至少一个泵浦源的泵浦光 功率， 将所述拉曼光放大器的所述监控通道的增益调节至目标增益。
16、 根据权利要求 15所述的装置， 其特征在于， 所述处理部件控制所 述拉曼光放大器的所述至少一个泵浦源的泵浦光功率， 具体包括：
确定所述拉曼光放大器的所述监控通道的当前增益与所述目标增益之 间的大小关系；
在确定的所述监控通道的当前增益大于所述目标增益时， 降低所述至少 一个泵浦源的泵浦光功率； 或在确定的所述监控通道的当前增益小于所述目 标增益时， 增加所述至少一个泵浦源的泵浦光功率。
17、 根据权利要求 10至 16中任一项所述的装置， 其特征在于， 所述处 理部件还用于：
在确定所述拉曼光放大器的所述监控通道的当前增益之前， 建立包括所 述监控通道的至少一个监控通道的增益与增益参数信息的对应关系。
18、 根据权利要求 17所述的装置， 其特征在于， 所述至少一个监控通 道包括与所述拉曼光放大器的输出功率峰值和 /或输出功率谷值相应的传输 通道。
19、 根据权利要求 10至 18中任一项所述的装置， 其特征在于， 所述装 置还包括：
至少一个输出端口， 用于向所述拉曼光放大器的至少一个泵浦源输出驱 动电压或^动电流;
其中， 所述处理部件包括： 存储器和处理器， 所述存储器用于存储指令 以及所述对应关系， 所述处理器用于执行所述存储器存储的指令。
20、 根据权利要求 10至 19中任一项所述的装置， 其特征在于， 所述装 置为用于确定后向拉曼光放大器的增益的装置。
21、 一种拉曼光放大器， 其特征在于， 所述拉曼光放大器包括： 根据权利要求 9至 17中任一项所述的确定拉曼光放大器的增益的装置； 和
用于给所述拉曼光放大器进行泵浦的至少一个泵浦源。
22、 根据权利要求 21所述的拉曼光放大器， 其特征在于， 所述拉曼光 放大器还包括：
耦合器， 用于将所述至少一个泵浦源输出的泵浦光耦合到所述拉曼光放 大器的输入光纤；
波长选择器， 用于获取所述拉曼光放大器的带外放大自发辐射 ASE噪 声；
第一光电探测器， 用于将所述带外 ASE噪声转换为第一电信号， 并将 所述第一电信号输入至所述装置的所述处理部件；
第二光电探测器，用于将所述拉曼光放大器的输出信号转换为第二电信 号， 并将所述第二电信号输入至所述装置的所述处理部件。
23、 根据权利要求 21或 22所述的拉曼光放大器， 其特征在于， 所述拉 曼光放大器还包括： 至少一个分光器和第三光电探测器； 其中， 所述至少一个分光器用于将所述至少一个泵浦源输出的泵浦光分 成两部分， 一部分泵浦光输入至所述拉曼光放大器的输入光纤； 另一部分泵 浦光输入至所述第三光电探测器；
所述第三光电探测器用于将接收的光信号转换为第三电信号， 并将所述 第三电信号输入至所述装置的所述处理部件。
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