WO2017177558A1 - Dispositif et procédé de diagnostic de trajet de lumière - Google Patents

Dispositif et procédé de diagnostic de trajet de lumière Download PDF

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Publication number
WO2017177558A1
WO2017177558A1 PCT/CN2016/088424 CN2016088424W WO2017177558A1 WO 2017177558 A1 WO2017177558 A1 WO 2017177558A1 CN 2016088424 W CN2016088424 W CN 2016088424W WO 2017177558 A1 WO2017177558 A1 WO 2017177558A1
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Prior art keywords
optical
signal
optical path
optical signal
optical power
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Ceased
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PCT/CN2016/088424
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English (en)
Chinese (zh)
Inventor
那婷
黄新刚
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ZTE Corp
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ZTE Corp
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    • 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
    • H04B10/07—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
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • 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
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • H04B10/07955—Monitoring or measuring power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems

Definitions

  • the present application relates to, but is not limited to, the field of optical communication technologies, and in particular, to an optical path diagnosis method and apparatus.
  • TWDM-PON Time and Wavelength Division Multiplexed Passive Optical Network
  • WDM-PON Wavelength Division Multiplexing Passive Optical Network
  • OFDM-PON Orthogonal Frequency Division Multiplexing Passive Optical Network
  • TWDM PON and WDM PON technologies have wavelength management and wavelength tuning functions. Operators can transfer end users from one wavelength to another, which can balance network load and flexibly allocate network bandwidth for energy saving. And if a wavelength channel fails, the end user is transferred to another wavelength through wavelength management, which can greatly reduce the operation and maintenance cost and enhance the user experience.
  • wavelength management has many advantages, it must be ensured that the optical path of the target wavelength channel is intact and the target wavelength channel is available. Otherwise, the ONU migration failure of the optical network unit may occur.
  • the present application provides an optical path diagnosis method and apparatus for diagnosing the integrity of an optical path of a target wavelength channel.
  • An optical path diagnosis method includes:
  • the optical power of the optical signal is detected.
  • the optical path is diagnosed based on the result of the judgment.
  • the acquired optical signal is a partial optical signal of a target wavelength in the optical path.
  • determining whether the optical power of the optical signal is abnormal includes:
  • the diagnosing the optical path according to the determination result includes: when the determination result is that the optical power of the optical signal is abnormal, the optical path is diagnosed as abnormal; and the determining result is the optical signal When the optical power is normal, it is diagnosed that the optical path is normal.
  • the method further includes: when the optical signal of the target wavelength is not acquired in the optical path, the optical path diagnosed as the target wavelength is abnormal.
  • the method further comprises: outputting the result of the diagnosis.
  • An optical path diagnosis device includes: a signal acquisition module and a diagnosis module.
  • the signal acquisition module is configured to acquire an optical signal of a target wavelength in the optical path.
  • the diagnosis module is configured to detect the optical power of the optical signal, determine whether the optical power of the optical signal is abnormal, and diagnose the optical path according to the determination result.
  • the diagnostic module includes: a light detecting unit and a determining unit.
  • the light detecting unit is configured to receive an optical signal acquired by the signal acquiring module and transmit the optical signal to the determining unit.
  • the determining unit is configured to detect an optical power of the optical signal transmitted by the light detecting unit.
  • the determining, by the diagnostic module, whether the optical power of the optical signal is abnormal includes:
  • the determining unit is further configured to compare the optical power of the optical signal with a set optical power threshold, and if the optical power of the optical signal is less than the optical power threshold, the determination result is the optical signal The optical power is abnormal; if the optical power of the optical signal is greater than or equal to the optical power threshold, The result of the judgment is that the optical power of the optical signal is normal.
  • the diagnosing module diagnoses the optical path according to the determination result, including:
  • the determining unit is further configured to: if the determination result is that the optical power of the optical signal is abnormal, diagnose that the optical path is abnormal; and if the determination result is that the optical power of the optical signal is normal, It is diagnosed that the optical path is normal.
  • the optical signal acquired by the signal acquiring module is a partial optical signal of the target wavelength.
  • the optical path diagnostic device is deployed on an optical path of a target wavelength between the OLT and the multiplexer/demultiplexer.
  • the signal acquisition module is a beam splitter.
  • the beam splitter is configured to split a portion of the optical signal on the optical path of the target wavelength output by the OLT.
  • the optical path diagnostic device is disposed between the multiplexer/demultiplexer and the backbone fiber.
  • the signal acquisition module includes: a beam splitter and a tunable filter.
  • the beam splitter is arranged to split a portion of the optical signal on the optical path of the multiplexer/demultiplexer output.
  • the tunable filter is configured to perform filtering processing on a part of the optical signal split by the optical splitter to obtain an optical signal of a target wavelength.
  • the diagnostic module is further configured to diagnose that the optical path of the target wavelength is abnormal when the signal acquiring module does not acquire the optical signal of the target wavelength in the optical path.
  • the optical path diagnostic device further includes: an output module.
  • the output module is configured to output a diagnosis result of the diagnostic module.
  • the optical path abnormality of the target wavelength is diagnosed.
  • the optical path diagnosis can ensure that the ONU can successfully perform wavelength migration during wavelength management, avoid user service interruption for a long time, affect the user experience, and do not need wavelength migration. It can also be used for daily inspection and maintenance of the system, reducing operating and maintenance costs.
  • FIG. 1 is a flowchart of an optical path diagnosis method according to an embodiment of the present invention.
  • FIG. 2 is a structural block diagram of an optical path diagnosing device according to an embodiment of the present invention.
  • FIG. 3 is a structural block diagram of an optical path diagnosing device in a TWDM-PON system according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of deployment of an optical path diagnosis apparatus in the structure of FIG. 3 according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of still another deployment of the optical path diagnosing device in the structure of FIG. 3 according to an embodiment of the present invention.
  • FIG. 6 is a block diagram showing another structure of an optical path diagnosing device in a TWDM-PON system according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of deployment of an optical path diagnosis apparatus in the structure of FIG. 6 according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of an optical path diagnosis method in the deployment mode of FIG. 4 and FIG. 5 according to an embodiment of the present invention
  • FIG. 9 is a flowchart of an optical path diagnosis method in the deployment mode of FIG. 7 according to an embodiment of the present invention.
  • Embodiments of the present invention provide an optical path diagnosis method and apparatus, which are applicable to TWDM PON and WDM PON systems, and are used to detect whether the optical path of each wavelength channel in the system is intact.
  • the optical path diagnosis method provided by the embodiment of the present invention includes steps S101-S104:
  • Step S101 acquiring an optical signal of a target wavelength in the optical path.
  • the acquired optical signal is a partial optical signal of the target wavelength in order not to affect the transmission characteristics of the detected optical path.
  • Step S102 detecting optical power of the optical signal.
  • Step S103 determining whether the optical power of the optical signal is abnormal.
  • determining whether the optical power of the optical signal is abnormal includes:
  • the preset optical power threshold is preferably a work that can be achieved by the normal optical signal. Rate value.
  • Step S104 diagnosing the optical path according to the determination result.
  • the diagnosing the optical path according to the determination result includes: when the determination result is that the optical power of the optical signal is abnormal, it is diagnosed that the optical path is abnormal (ie, the optical path is unavailable); When the result of the determination is that the optical power of the optical signal is normal, it is diagnosed that the optical path is normal (ie, the optical path is available).
  • the optical path abnormality of the target wavelength is directly diagnosed.
  • the diagnosis result is obtained, the result of the diagnosis is output.
  • the diagnosis result may be output to the OLT, and the diagnosis result is transmitted by the OLT to the corresponding processing chip.
  • the diagnosis result can also be directly output to the corresponding processing chip.
  • the method according to the embodiment of the present invention realizes the diagnosis of the abnormality of the optical path of the target wavelength, provides guarantee for wavelength migration, and can also serve as a means for daily detection and maintenance of the system.
  • An embodiment of the present invention further provides an optical path diagnosing device. As shown in FIG. 2, the device includes:
  • the signal acquisition module 210 is configured to acquire an optical signal of a target wavelength in the optical path.
  • the diagnostic module 220 is configured to detect optical power of the optical signal, determine whether the optical power of the optical signal is abnormal, and diagnose the optical path according to the determination result.
  • the diagnostic module 220 includes: a light detecting unit 221 and a determining unit 222.
  • the light detecting unit 221 is configured to receive the optical signal acquired by the signal acquisition module 210 and transmit it to the decision unit.
  • the determining unit 222 is configured to detect the optical power of the optical signal transmitted by the light detecting unit 221.
  • the determining, by the diagnostic module, whether the optical power of the optical signal is abnormal includes:
  • the determining unit is further configured to compare the optical power of the optical signal with a set optical power threshold, and if the optical power of the optical signal is less than the optical power threshold, the determination result is the The optical power of the optical signal is abnormal; if the optical power of the optical signal is greater than or equal to the optical power threshold, the result of the determination is that the optical power of the optical signal is normal.
  • the diagnosing the optical path according to the determination result includes: the determining unit 222 is further configured to: when the determination result is that the optical power of the optical signal is abnormal, diagnose that the optical path is Abnormal; if the result of the determination is that the optical power of the optical signal is normal, it is diagnosed that the optical path is normal.
  • the light detecting unit 221 converts the optical signal into an electrical signal, and transmits the converted electrical signal to the determining unit 222.
  • a signal amplifier is further disposed between the light detecting unit 221 and the determining unit 222, and is arranged to perform amplification processing on the signal output from the light detecting unit 221 to the determining unit.
  • the amplification processing is only a processing form, and the user can also perform filtering and the like on the signal output from the photo detecting unit 221 to the decision unit according to requirements, so that the power judgment is more accurate.
  • the optical signal acquired by the signal acquiring module 210 is a partial optical signal of the target wavelength.
  • the optical path diagnostic device is disposed on an optical path of a target wavelength between the OLT and the multiplexer/demultiplexer.
  • the signal acquisition module 210 is a beam splitter; the beam splitter is arranged to split a part of the optical signal on the optical path of the target wavelength output by the OLT.
  • the optical path diagnostic device is disposed between the multiplexer/demultiplexer and the backbone fiber.
  • the signal acquisition module includes: a beam splitter and a tunable filter.
  • the beam splitter is arranged to split a portion of the optical signal on the optical path of the multiplexer/demultiplexer output.
  • the tunable filter is configured to perform filtering processing on a part of the optical signal split by the optical splitter to obtain an optical signal of a target wavelength.
  • the diagnostic module 220 is further configured to directly diagnose the optical path abnormality of the target wavelength when the signal acquiring module 210 does not acquire the optical signal of the target wavelength.
  • the optical path diagnosing device further includes: an output module 230, It is set to output the diagnosis result of the diagnosis module 220.
  • the diagnosis result may be output to the OLT, and the diagnosis result is transmitted by the OLT to the corresponding processing chip.
  • the diagnosis result can also be directly output to the corresponding processing chip.
  • the device realizes the diagnosis of the abnormality of the optical path of the target wavelength, provides protection for wavelength migration, and can also serve as a routine detection and maintenance device for the system.
  • the optical path diagnosing device provided by the embodiment of the present invention is deployed in the downlink optical path of the TWDM PON system, and there are two deployment modes:
  • the optical path diagnostic device is deployed before the ⁇ 1 ⁇ ⁇ n wavelength optical path from the OLT of the TWDM PON system enters the Mux/DeMux device, optionally, the optical path diagnostic device and the Mux/DeMux (multiplexer/demultiplexer) The device is integrated into one.
  • the optical path diagnostic device is deployed in the TWDM PON system Mux/DeMux device.
  • the optional optical path diagnosis device is integrated with the Mux/DeMux device.
  • the structure of the optical path diagnostic device used varies according to the deployment method.
  • the scheme is as follows:
  • the optical path diagnosis device When the optical path diagnosis device is deployed before the ⁇ 1 ⁇ n wavelength optical path sent by the OLT of the TWDM PON system enters the Mux/DeMux device, as shown in FIG. 3, the optical path diagnosis device includes: a beam splitter, a diagnosis module, and an output module.
  • the schematic diagram of the optical path diagnosing device deployed in the downstream optical path of the TWDM PON system is shown in FIGS. 4 and 5. In FIG. 4, each wavelength optical path shares an output module, and in FIG. 5, each wavelength optical path includes an output module. .
  • the optical path diagnosis device When the optical path diagnosis device is deployed in the TWDM PON system Mux/DeMux device, before the trunk fiber, as shown in FIG. 6, the optical path diagnosis device includes: a beam splitter, a tunable filter, a diagnosis module, and an output module.
  • FIG. 7 A schematic diagram of the optical path diagnosis apparatus deployed in the downlink optical path of the TWDM PON system is shown in FIG. 7.
  • the above diagnostic module includes: a light detecting unit and a determining unit.
  • the light detecting unit is configured to receive an optical signal branched by the optical splitter and transmit it to the determining unit.
  • the determining unit detects the power of the optical signal, and provides a threshold value, which is set to determine whether the signal output by the light detecting unit meets the normal standard of the optical path, and gives a decision signal.
  • a signal amplifying device can also be added between the light detecting unit and the determining unit according to the situation, and the device can put the signal output by the light detecting unit Big deal.
  • the output module includes: a transmission unit and an interface that is matched with the device that receives the diagnosis result.
  • the device that receives the diagnosis result is an OLT.
  • the transmission unit is configured to transmit an output signal of the diagnostic module to an interface that matches the OLT; the interface that matches the OLT sends the diagnostic result to the OLT.
  • the implementation process of the optical path diagnosis is as shown in FIG. 8 , including steps S801-S805:
  • Step S801 the ⁇ i wavelength optical path sent by the OLT enters the optical splitter of the optical path diagnosing device, and the optical splitter splits a small portion of the optical signal, that is, the optical signal to be detected. It should be pointed out that the splitter does not affect the transmission characteristics of the detected optical path after splitting.
  • Step S802 the optical signal to be detected enters the diagnostic module of the optical path diagnosing device, and the optical detecting unit in the diagnostic module transmits the optical signal to be detected to the determining unit.
  • Step S803 the determining unit performs optical path abnormality diagnosis according to the optical power of the optical signal to be detected.
  • the optical path abnormality of the TWDM PON system is basically divided into two cases. One is that the wavelength channel has no light, and the other is that the wavelength channel has light, but the optical power is abnormal, and the output optical power requirement is not met, so the light detecting unit corresponds to three. Kind of output, one is a normal optical signal, one is a low optical power signal, and the other is a zero optical power signal.
  • the decision unit After the three signals corresponding to the optical path condition of the TWDM PON system enter the decision unit, two decision signals are obtained, one is the decision signal 0 corresponding to the optical path of the TWDM PON system, and the other is the decision signal 1 corresponding to the optical path abnormality of the TWDM PON system.
  • Step S804 the decision signal enters the output module, and the decision signal is transmitted to the OLT through the output module.
  • Step S805 the OLT sends the decision signal to the corresponding processing chip, and the processing chip determines whether the optical path is available through the decision signal, and then directs the next operation of the OLT, such as sending an instruction to the ONU to perform wavelength migration.
  • Step S901 the optical signal after the Mux/DeMux device of the TWDM PON system enters the optical splitter, and the optical splitter splits a small portion of the optical signal, that is, the optical signal to be detected. It should be pointed out that the splitter does not affect the transmission characteristics of the detected optical path after splitting.
  • Step S902 the optical signal to be detected enters a tunable filter, and the tunable filter filters the optical signal to be detected (only the signal to be detected is reserved) to obtain a wavelength signal ⁇ i to be detected.
  • Step S903 the optical signal ⁇ i to be detected enters the light detecting unit in the diagnostic module, and the light detecting unit transmits the optical signal to be detected to the determining unit.
  • Step S904 the signal output by the light detecting unit enters a decision unit, and the determining unit performs optical path abnormality diagnosis according to the optical power of the optical signal to be detected.
  • the optical path abnormality of the TWDM PON system is basically divided into two cases. One is that the wavelength channel has no light, and the other is that the wavelength channel has light, but the optical power is abnormal, and the output optical power requirement is not met, so the light detecting unit corresponds to three. Kind of output, one is a normal optical signal, one is a low optical power signal, and the other is a zero optical power signal.
  • the decision unit After the three signals corresponding to the optical path condition of the TWDM PON system enter the decision unit, two decision signals are obtained, one is the decision signal 0 corresponding to the optical path of the TWDM PON system, and the other is the decision signal 1 corresponding to the optical path abnormality of the TWDM PON system.
  • step S905 the decision signal enters the output module, and the decision signal is transmitted to the OLT through the output module.
  • step S906 the OLT sends the decision signal to the corresponding processing chip, and the processing chip determines the availability of the optical path through the decision signal, thereby guiding the next operation of the OLT, such as sending an instruction to the ONU for wavelength migration.
  • a computer readable storage medium storing computer executable instructions that, when executed by a processor, implement the optical path diagnostic method.
  • the computer program can be implemented in a computer readable storage medium, the computer program being executed on a corresponding hardware platform (such as a system, device, device, device, etc.), when executed, including One or a combination of the steps of the method embodiments.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • the device/function module/functional unit in the above embodiment When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the optical path abnormality of the target wavelength is diagnosed.
  • the optical path diagnosis can ensure that the ONU can successfully perform wavelength migration during wavelength management, avoid user service interruption for a long time, affect the user experience, and do not need wavelength migration. It can also be used for daily inspection and maintenance of the system, reducing operating and maintenance costs.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)

Abstract

L'invention concerne un procédé et un dispositif de diagnostic de trajet de lumière. Le procédé consiste : à obtenir un signal de lumière présentant une longueur d'onde cible dans un trajet de lumière; à mesurer une puissance optique du signal de lumière; à déterminer si la puissance optique du signal de lumière est anormale; et à diagnostiquer le trajet de lumière en fonction du résultat de la détermination.
PCT/CN2016/088424 2016-04-12 2016-07-04 Dispositif et procédé de diagnostic de trajet de lumière Ceased WO2017177558A1 (fr)

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CN201610223765.0 2016-04-12
CN201610223765.0A CN107294599A (zh) 2016-04-12 2016-04-12 一种光路诊断方法和装置

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CN112311451A (zh) * 2019-07-29 2021-02-02 中国石油天然气集团有限公司 一种光器件故障检测方法及装置
CN115765862A (zh) * 2022-11-01 2023-03-07 深圳市湾泰若科技开发有限公司 一种多波长光功率的检测模块及其检测装置
CN116429381A (zh) * 2023-06-02 2023-07-14 成都光创联科技有限公司 多端口复合光路器件的光路检测装置及装配方法
WO2025223076A1 (fr) * 2024-04-23 2025-10-30 烽火通信科技股份有限公司 Procédé et appareil de surveillance de fonctionnement et de maintenance pour système de communication optique multibande

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CN114244432B (zh) * 2021-12-16 2023-07-18 中国电信股份有限公司 故障检测装置、方法、分析诊断设备、系统和存储介质
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CN115765862A (zh) * 2022-11-01 2023-03-07 深圳市湾泰若科技开发有限公司 一种多波长光功率的检测模块及其检测装置
CN116429381A (zh) * 2023-06-02 2023-07-14 成都光创联科技有限公司 多端口复合光路器件的光路检测装置及装配方法
CN116429381B (zh) * 2023-06-02 2023-08-18 成都光创联科技有限公司 多端口复合光路器件的光路检测装置及装配方法
WO2025223076A1 (fr) * 2024-04-23 2025-10-30 烽火通信科技股份有限公司 Procédé et appareil de surveillance de fonctionnement et de maintenance pour système de communication optique multibande

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