WO2016106594A1 - 一种数据传输的方法、装置和系统 - Google Patents

一种数据传输的方法、装置和系统 Download PDF

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Publication number
WO2016106594A1
WO2016106594A1 PCT/CN2014/095642 CN2014095642W WO2016106594A1 WO 2016106594 A1 WO2016106594 A1 WO 2016106594A1 CN 2014095642 W CN2014095642 W CN 2014095642W WO 2016106594 A1 WO2016106594 A1 WO 2016106594A1
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Prior art keywords
optical signal
mode
module
port
processor
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Ceased
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PCT/CN2014/095642
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English (en)
French (fr)
Inventor
殷锦蓉
王卫阳
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2014/095642 priority Critical patent/WO2016106594A1/zh
Priority to EP14909405.4A priority patent/EP3232587B1/en
Priority to CN201480077222.1A priority patent/CN106464377B/zh
Publication of WO2016106594A1 publication Critical patent/WO2016106594A1/zh
Priority to US15/637,577 priority patent/US10200146B2/en
Anticipated expiration legal-status Critical
Priority to US16/268,107 priority patent/US20190245644A1/en
Ceased legal-status Critical Current

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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
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2581—Multimode transmission
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/04—Mode multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • H04L1/0042—Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03343—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
    • H04L27/367—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, apparatus and system for data transmission in the field of communications.
  • the data center and mobile bearer markets have shown strong growth. Due to the relatively low cost of the multi-mode fiber, the system has the advantages of low system cost, and is very competitive in short-distance transmission such as data center and mobile bearer.
  • the prior art mainly adopts a parallel system scheme, for example, in 40, Gbps, 100 Gbps, and 400 Gbps parallel systems, 4, 10, 16 pairs of 10 Gbps, 10 Gbps, and 25 Gbps transceivers respectively carry optical signals to 4, 10, and 16 In parallel fiber, 40Gbps, 100Gbps, and 400Gbps network transmission is realized.
  • this method realizes the transmission of large-capacity data by combining several optical fibers, and does not increase the transmission capacity of a single optical fiber. How to increase the transmission capacity of a single optical fiber as the network capacity and rate increase? Need to be solved.
  • the embodiment of the invention provides a method, a device and a system for data transmission, which realizes the transmission of big data by increasing the transmission capacity of a single optical fiber, thereby realizing the rapid expansion of the transmission capacity, thereby improving the total bandwidth utilization of the system.
  • a method of data transmission comprising:
  • the converted second optical signal is multiplexed into a multimode optical fiber for transmission.
  • the first optical signal is an optical signal of one or more modes.
  • the module in conjunction with the first aspect or the first embodiment, includes one or more optical signals of modes of the same or similar propagation constants.
  • a method of data transmission comprising:
  • the method further includes:
  • the second optical signal is converted into an optical signal output of a preset mode.
  • the second optical signal is an optical signal of one or more modes.
  • the module includes one or more optical signals of modes of the same or similar propagation constants.
  • a mode multiplexer comprising:
  • a first port processing unit configured to receive a first optical signal from the input port; and multiplex the converted second optical signal into a multimode optical fiber according to an instruction of the first processor;
  • the first processor is configured to convert the received first optical signal into one or more modes in a module corresponding to the input port according to a correspondence between an input port of the optical signal and a module. And a second optical signal, instructing the first port processing unit to multiplex the converted second optical signal into a multimode optical fiber for transmission.
  • the first optical signal is an optical signal of one or more modes.
  • the module in conjunction with the third aspect, includes one or more optical signals of modes of the same or similar propagation constants.
  • a fourth aspect is a mode demultiplexer, the mode demultiplexer comprising:
  • a second port processing unit configured to receive a second optical signal; output the received second optical signal from a corresponding output port according to an instruction of the second processor;
  • the second processor is configured to determine a module to which the second optical signal belongs; and obtain an output port corresponding to the received second optical signal according to a correspondence between the output port and the module;
  • the second port processing unit outputs the received second optical signal from a corresponding output port.
  • the second processor is further configured to convert the second optical signal into an optical signal of a preset mode; and instruct the second The port processing unit outputs the converted signal from the corresponding output port;
  • the second port processing unit is further configured to output the converted optical signal from the corresponding port according to an instruction of the second processor.
  • the second optical signal is an optical signal of one or more modes.
  • the module in conjunction with the fourth aspect, in a third implementation of the fourth aspect, includes one or more optical signals of modes of the same or similar propagation constants.
  • a fifth aspect is a space division multiplexing system, the space division multiplexing system comprising at least the embodiment of the third aspect mentioned above.
  • system further comprises: the embodiment of the fourth aspect mentioned above.
  • a sixth aspect is a data communication device, the device comprising: a processor, a memory, and a bus system, wherein the processor and the memory are connected by the bus system, the memory is for storing instructions, and the processor is used by the processor Executing instructions stored in the memory,
  • the processor is configured to receive the first optical signal from the input port, and convert the received first optical signal into a module corresponding to the input port according to the corresponding relationship between the input port of the optical signal and the module. a second optical signal of one or more modes; multiplexing the converted second optical signal into a multimode optical fiber for transmission.
  • a seventh aspect is a data communication device, the device comprising: a processor, a memory, and a bus system, wherein the processor and the memory are connected by the bus system, the memory is for storing instructions, and the processor is used by the processor Executing instructions stored in the memory,
  • the processor is configured to: receive a second optical signal; determine a module to which the second optical signal belongs; and output the received second optical signal from a corresponding output according to a correspondence between the output port and the module Port output.
  • the embodiment of the present invention receives a first optical signal from an input port by using a mode demultiplexer, and converts the received first optical signal into a location according to a corresponding relationship between an input port of the optical signal and the module.
  • the second optical signal of the one or more modes in the module corresponding to the input port multiplexes the converted second optical signal into the multimode optical fiber, and does not need to replace the existing optical fiber in the data center,
  • the transmission capacity of a single fiber is increased to realize the transmission of big data, which realizes the rapid expansion of the transmission capacity, thereby improving the total bandwidth utilization of the system.
  • FIG. 1A is a schematic block diagram of an application scenario according to an embodiment of the present invention.
  • FIG. 1B is a schematic block diagram of an application scenario according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a data communication method according to an embodiment of the present invention.
  • FIG. 3 is another schematic flowchart of a data communication method according to an embodiment of the present invention.
  • FIG. 4 is a flow chart showing a detailed description of a data communication method according to an embodiment of the present invention.
  • FIG. 5 is a schematic block diagram of a multimode optical fiber transmission method according to an embodiment of the present invention.
  • FIG. 6 is a schematic block diagram of another multimode optical fiber transmission method according to an embodiment of the present invention.
  • FIG. 7 is a schematic block diagram of still another multimode optical fiber transmission method according to an embodiment of the present invention.
  • FIG. 8 is a schematic block diagram of a data communication apparatus according to an embodiment of the present invention.
  • FIG. 9 is another schematic block diagram of a data communication apparatus according to an embodiment of the present invention.
  • Figure 10 is still another schematic block diagram of a data communication device in accordance with an embodiment of the present invention.
  • FIG. 1A shows a schematic block diagram of an application scenario according to an embodiment of the present invention.
  • the system is a multi-mode optical fiber based spatial division multiplexing (SDM) system including: a transmitter, a mode multiplexer, a mode demultiplexer, and a receiver;
  • the transmitter is respectively connected to the mode multiplexer through a multimode optical fiber, and the mode multiplexer is connected to the mode demultiplexer through a multimode optical fiber, and the mode demultiplexer passes through a multimode optical fiber.
  • SDM spatial division multiplexing
  • the mode multiplexer multiplexes optical signals transmitted by the respective transmitters through the multimode fiber onto the multimode fiber between the mode multiplexer and the mode demultiplexer
  • the mode demultiplexer is configured to send the received optical signal to the receiver for data processing and recovery through each of the multimode optical fibers connected thereto.
  • the mode multiplexer has a plurality of input ports
  • the mode demultiplexer has a plurality of output ports, wherein the input port on the mode multiplexer and the mode demultiplexer
  • the output port has a corresponding relationship, for example: an optical signal received from the first port on the mode multiplexer, on the mode demultiplexer through the mode multiplexer The first port is forwarded out.
  • the transmitter and receiver respectively include respective transmitters and receivers for transmitting optical signals and receiving optical signals.
  • FIG. 1B is another network architecture diagram, specifically describing a structure in which a transmitter is integrated with a mode multiplexer and a receiver is integrated with a mode multiplexer.
  • the transmitting module comprises: a transmitter and a mode multiplexer, the transmitter comprises: n laser drivers and a laser array comprising n lasers, wherein the transmitter and the mode multiplexer can be directly spatially coupled or coupled by a waveguide, To cancel the multimode fiber between the transmitter and the mode multiplexer.
  • the receiving module comprises: a mode demultiplexer and a receiver, the receiver comprising: a receiver array comprising n photodetectors and a transimpedance amplifier TIA, and n limiting amplifiers, wherein the receiver and the mode solution
  • the multiplexer can be directly spatially coupled or coupled using a waveguide to cancel the multimode fiber between the receiver and the mode demultiplexer.
  • FIG. 2 shows a schematic flow chart of a method of data transmission, which may be performed by a data communication device, such as the mode multiplexer of FIG. 1, in accordance with an embodiment of the present invention, wherein the method of data transmission described above may be applied.
  • Figure 1 is a network architecture diagram. As shown in Figure 2, the method includes:
  • the mode multiplexer receives the first optical signal from the input port.
  • the mode multiplexer converts the received first optical signal into a second light of one or more modes in a module corresponding to the input port according to a correspondence between an input port of the optical signal and the module. signal.
  • the mode multiplexer multiplexes the converted second optical signal into a multimode optical fiber for transmission.
  • the first optical signal is an optical signal of one or more modes.
  • the module includes one or more optical signals of modes of the same or similar propagation constants.
  • the present invention discloses a data data transmission method for receiving a first optical signal from an input port through a mode multiplexer; converting the received first optical signal into a corresponding optical signal according to a corresponding relationship between an input port of the optical signal and the module a second optical signal of one or more modes in the module corresponding to the input port; multiplexing the converted second optical signal into a multimode fiber for transmission, and realizing big data by increasing the transmission capacity of the single fiber Transmission enables fast expansion of transmission capacity, which in turn increases overall system bandwidth utilization.
  • FIG. 3 is a schematic flowchart of a method for data transmission according to an embodiment of the present invention.
  • the method can be performed by a data communication device, such as the mode demultiplexer of FIG. 1, wherein the method of the digital communication described above can be applied to the network architecture diagram of FIG. As shown in FIG. 3, the method includes:
  • the mode demultiplexer receives the second optical signal.
  • the mode demultiplexer determines a module to which the second optical signal belongs.
  • the mode demultiplexer outputs the received second optical signal from the corresponding output port according to the correspondence between the output port and the module.
  • the method further includes:
  • the mode demultiplexer converts the second optical signal into an optical signal output of a predetermined mode.
  • the second optical signal is an optical signal of one or more modes.
  • the module includes one or more optical signals of modes of the same or similar propagation constants.
  • the invention discloses a data data transmission method, which receives a second optical signal by a mode demultiplexer, determines a module to which the second optical signal belongs, and receives the received according to a correspondence between an output port and a module.
  • the second optical signal is output from the corresponding output port, and the transmission capacity of the single fiber is increased to realize the transmission of the big data, thereby realizing the rapid expansion of the transmission capacity, thereby improving the total bandwidth utilization of the system.
  • FIG. 4 shows a specific flow chart of a method of data transmission according to an embodiment of the present invention, which may be performed by a data communication device such as the mode demultiplexer of FIG. 1, wherein the method of the above-described data communication can be applied to Figure 1 is a network architecture diagram. As shown in FIG. 4, the method includes:
  • the transmitter transmits the optical signal of the first mode.
  • FIG. 5 is a schematic block diagram of a multimode optical fiber transmission method. As shown in Figure 5, the transmitter transmits optical signals to the mode multiplexer through the multimode fiber.
  • the system divides the optical signals of different modes into a plurality of modules in advance.
  • Each module as a whole carries one optical signal, and each module may include one or more optical signals of the same or similar propagation constants.
  • the optical fiber of the mode LP01 is divided into a module 1, that is, a mode.
  • Group 1 includes optical signals of mode LP01; LP11a and LP11b are divided into modules 2; modes are LP02, LP21a, LP21b are divided into modules 3, and so on.
  • the transmitter may be a Vertical-Cavity Surface-Emitting Laser (VCSEL), a Distributed Feedback Laser (DFB), or a Fabry-Perot. (Fabry-perot FP) laser.
  • VCSEL Vertical-Cavity Surface-Emitting Laser
  • DFB Distributed Feedback Laser
  • Fabry-perot FP Fabry-Perot.
  • the transmitter can adopt an On-Off Keying (OOK)-based modulation method.
  • the data signal is modulated onto the optical signal for transmission.
  • the transmitter can also use Phase Shift Keying (PSK) modulation, Quadrature Amplitude Modulation (QAM), Pulse Amplitude Modulation (PAM, Pulse Amplitude). Modulation) Modulates the data signal onto the optical signal for transmission; the receiver can detect the optical signal by direct detection, or can detect the optical signal by coherent detection.
  • pre-equalization can be performed on the transmitter side to eliminate interference of other channels, and filtering processing can be performed on the receiver side to eliminate interference of other channels.
  • Pre-equalization can be performed on the transmitter side and filtering processing on the receiver side to eliminate interference from other channels.
  • the mode multiplexer receives the first optical signal from the input port.
  • the mode multiplexer receives an optical signal transmitted from the first transmitter from the input port 1; receives an optical signal transmitted from the second transmitter from the input port 2, and so on.
  • the fiber connecting the mode multiplexer and the transmitter is a multimode fiber
  • the fiber between the mode multiplexer and the mode demultiplexer also uses a multimode fiber.
  • the mode multiplexer converts the received first optical signal into a second light of one or more modes in a module corresponding to the input port according to a correspondence between an input port of the optical signal and the module. signal.
  • the input port of the mode multiplexer has a corresponding relationship with the module.
  • the mode multiplexer receives the optical signal transmitted by the first transmitter from the port number 1, and converts the optical signal transmitted from the first transmitter of the port 1 into a light signal according to the corresponding relationship between the input port and the module.
  • the mode multiplexer receives the optical signal transmitted by the second transmitter from the input port of port number 2.
  • the light emitted by the second transmitter received from the port number 2 The signal is converted into an optical signal of the LP11a mode and/or the LP11b mode in the module 2, and the optical signal transmitted by the third transmitter received from the port number 3 is converted into the LP02 mode and/or the LP21a mode and/or in the module 3. Or the optical signal of the LP21b mode, and multiplex the converted optical signals of the respective modes to the multimode optical fiber for output.
  • the module when transmitting in an optical fiber, since the module includes one or more optical signals of the same or similar propagation constant, the crosstalk between the module and the module is relatively small, so the division can reduce each module.
  • the LP01 optical signal of module 1 is still mainly transmitted in its own mode, and very few parts are crosstalked to other modules for transmission; LP11a and/or LP11b belong to module 2, and their propagation constants are basically the same, so in the optical fiber.
  • Crosstalk coupling will occur when transmitting, and both LP11a and LP11b modes will be present at the mode demultiplexer; likewise, LP02 and/or LP21a and / Or the LP21b is also crosstalk coupled to each other when transmitted in the optical fiber, and the LP02 optical signal, the LP21a optical signal, and the LP21b optical signal are simultaneously transmitted to the mode demultiplexer.
  • the mode demultiplexer receives the second optical signal, and determines a module to which the second optical signal belongs.
  • the mode demultiplexer determines a module to which the received second optical signal belongs according to different modules including different modes of optical signals.
  • the mode demultiplexer outputs the received second optical signal from the corresponding output port according to the correspondence between the output port and the module.
  • the optical signals of the different modules transmitted on the multimode fiber are forwarded according to the corresponding relationship between the output port and the module, and the optical signals of the different modules are forwarded according to the corresponding relationship between the output port number and the module number to Different output ports of the mode demultiplexer.
  • the mode demultiplexer receives the optical signals of the modules transmitted by the multimode optical fiber.
  • the module 1 includes the LP01 mode optical signal
  • the module 2 includes: the optical signal of the LP11a mode, and the LP11b mode light.
  • Signal includes: module 3 includes: LP02 mode optical signal, LP21a mode optical signal and LP21b mode optical signal.
  • the mode demultiplexer queries the corresponding relationship between the module number and the output port number according to the module number of the optical signal, and obtains the output corresponding to the optical signal by matching.
  • the port number forwards the optical signal to an output port of the mode demultiplexer corresponding to the port number.
  • the mode demultiplexer receives the LP01 optical signal of the module 1, and queries the correspondence between the module and the port, and learns that the optical signal of the module 1 is forwarded through the port 1, and the mode demultiplexer will module 1
  • the LP01 optical signal is forwarded through port 1, and transmitted to the receiver for data recovery after transmission through the multimode fiber.
  • the method further includes:
  • the mode demultiplexer is further configured to convert the second optical signal into an optical signal output of a preset mode.
  • FIG. 6 it is a schematic block diagram of another method of data transmission.
  • the operation of the mode multiplexer is identical to that of Figure 5, except for the actions performed by the mode demultiplexer.
  • the mode demultiplexer performs the output according to the preset LP01 mode optical signal
  • the mode demultiplexer is further configured to convert the received LP11a mode and/or the LP11b mode optical signal of the module 2, Converted to a preset LP01 mode optical signal, output through port 2; if the mode demultiplexer receives the optical signal of the LP01 mode of the module 1, and presets the optical signal that is also forwarded out to the LP01 mode, then it is not required Make the conversion.
  • the mode demultiplexer converts the received LP02 mode optical signal, the LP21a mode optical signal, and the LP21b mode optical signal included in the module 3 into an LP01 mode optical signal, and outputs the signal to the output port 3, and forwards it through the port 3. Go out, input the receiver for data recovery after transmission through multimode fiber complex.
  • the method may further include:
  • FIG. 7 is another method of data transmission.
  • FIG. 7 is different from FIG. 5 and FIG. 7 and FIG. 6 in that the transmitter transmits multiple modes of optical signals on the mode multiplexer.
  • Each port can receive different modes of optical signals, the other processes are the same, that is, the mode multiplexer input port in Figure 8 can input different modes of optical signals, and the mode multiplexer in Figure 5 and Figure 7
  • the optical signal of one mode is input, and the rest of the processes for performing the mode demultiplexer are the same, and can be referred to.
  • the transmitter transmits a single mode optical signal for transmission in a multimode fiber.
  • the transmitter can transmit a single mode optical signal by using a single transverse mode laser, or can select a lasing technique by mode filtering, eccentric injection or plaque shaping to ensure that only a single mode optical signal is in multimode. Transmission in fiber.
  • the single mode optical signal shown may be the optical signal of the LP01 mode; as shown in FIG. 7, the transmitter may use a common multimode transmitter, which is multimode. When the fiber is coupled, multiple modes of optical signals are excited and transmitted in the multimode fiber.
  • the mode multiplexer After receiving the signal through the multimode fiber, the mode multiplexer converts the received optical signals of the multiple modes into a mode corresponding to the port number (port number of the receiving port) according to the correspondence between the module number and the input port number. Optical signals are multiplexed into multimode fiber for transmission.
  • the transmitter uses an ordinary laser, and when the transmitted optical signal passes through the multimode fiber, the optical signals of the LP01 mode, the LP11a mode, the LP11b mode, the LP02 mode and the like are excited, and the mode multiplexer receives the input port 1 After the optical signals of the LP01 mode, the LP11a mode, the LP11b mode, and the LP02 mode, the received optical signal is converted into the optical signal of the mode included in the module 1 according to the correspondence between the input port 1 and the module 1.
  • the mode multiplexer After receiving the optical signals of the LP01 mode, the LP11a mode, the LP11b mode, and the LP02 mode of the input port 2, the mode multiplexer converts the optical signal into the LP11a of the module 2 according to the correspondence between the module 2 and the input port 2.
  • the modulo or / and LP11b mode optical signals are then multiplexed over the fiber for transmission.
  • the function of the mode demultiplexer is the same as that of FIG. 5 and FIG. 6, and is briefly described herein and will not be described in detail.
  • the mode demultiplexer receives the optical signals of different module numbers through the multimode optical fiber, for example, the optical signal of the mode demultiplexer receiving module 2, and the module 2 includes the LP11a optical signal and the LP11b optical signal, and the mode
  • the demultiplexer can find these optical signals on port 2 and forward them directly through port 2, as shown in Figure 7 and Figure 5; or the mode demultiplexer converts the received optical signals of different modules into pre-set
  • the optical signal of the mode corresponding to the module number is output through port 2, as shown in FIG.
  • the transmitter transmits After the LP01 mode optical signal is transmitted through the optical fiber, a part of the optical signal is crosstalked to other modules, and the mode multiplexer can filter the signal of the high-order module before performing mode conversion.
  • the receiver receives optical signals of different modules, and performs data recovery on the received optical signals.
  • both the transmitter and the mode multiplexer can be integrated into the optical module, and the mode demultiplexer and receiver are also integrated into the optical module, at this time the transmitter and mode multiplexer, receiver and mode
  • the demultiplexer can also be spatially coupled directly or coupled using a waveguide to cancel multimode fiber between the transmitter and mode multiplexer, receiver and mode demultiplexer, using a control mode multiplexer input port The mode is fine.
  • the first optical signal is received from the input port by the mode multiplexer; and the received first optical signal is converted into a mode corresponding to the input port according to the corresponding relationship between the input port of the optical signal and the module.
  • a second optical signal of one or more modes in the group multiplexing the converted second optical signal into a multimode optical fiber; the mode demultiplexer receiving the second optical signal; determining the second optical signal
  • the output of the received second optical signal from the corresponding output port does not require replacement of the existing optical fiber in the data center, and the transmission of the single optical fiber is improved.
  • the capacity realizes the transmission of big data, realizing the rapid expansion of the transmission capacity, thereby improving the total bandwidth utilization of the system.
  • FIG. 8 is a schematic block diagram showing the structure of a mode multiplexer. As shown in Figure 8, the mode multiplexer includes:
  • a first port processing unit 800 configured to receive a first optical signal from the input port; and multiplex the converted second optical signal into a multimode optical fiber according to an instruction of the first processor;
  • the first processor 802 is configured to convert the received first optical signal into one or more modes in a module corresponding to the input port according to a correspondence between an input port of the optical signal and a module.
  • the second optical signal instructs the first port processing unit to multiplex the converted second optical signal into a multimode optical fiber for transmission.
  • the first optical signal is an optical signal of one or more modes.
  • the module includes one or more optical signals of modes of the same or similar propagation constants.
  • the present invention discloses a mode multiplexer that receives a first optical signal from an input port through a mode multiplexer; and the received first optical signal according to a corresponding relationship between an input port of the optical signal and a module Converting a second optical signal into one or more modes of the module corresponding to the input port; multiplexing the converted second optical signal into a multimode fiber for transmission, by increasing the transmission capacity of the single fiber Realize the transmission of big data, realize the rapid expansion of transmission capacity, and thus improve the total bandwidth utilization of the system.
  • the mode demultiplexer includes:
  • a second port processing unit 900 configured to receive a second optical signal; output the received second optical signal from a corresponding output port according to an instruction of the second processor;
  • the second processor 902 is configured to determine a module to which the second optical signal belongs, and obtain an output port corresponding to the received second optical signal according to a corresponding relationship between the output port and the module;
  • the second port processing unit outputs the received second optical signal from a corresponding output port.
  • the second optical signal is converted into an optical signal output of a preset mode.
  • the second optical signal is an optical signal of one or more modes.
  • the module includes one or more optical signals of modes of the same or similar propagation constants.
  • the module includes one or more optical signals of modes of the same or similar propagation constants.
  • the invention discloses a mode demultiplexer, which receives a second optical signal by a mode demultiplexer, determines a module to which the second optical signal belongs, and receives the receiving according to a correspondence between an output port and a module.
  • the second optical signal is outputted from the corresponding output port, and the transmission capacity of the single fiber is increased to realize the transmission of the big data, thereby realizing the rapid expansion of the transmission capacity, thereby improving the total bandwidth utilization of the system.
  • the space division multiplexing system includes at least a mode multiplexer and a mode demultiplexer, wherein the mode multiplexer may include a function as shown in FIG. 8 of the device,
  • the mode demultiplexer includes the functions shown in Figure 9, specifically:
  • the mode multiplexer is configured to receive a first optical signal from an input port, and convert the received first optical signal into a mode corresponding to the input port according to a correspondence between an input port of the optical signal and a module. a second optical signal of one or more modes in the group; multiplexing the converted second optical signal into a multimode optical fiber for transmission.
  • the mode demultiplexer is configured to receive a second optical signal, determine a module to which the second optical signal belongs, and correspond to the received second optical signal according to a corresponding relationship between the output port and the module Output port output.
  • the module includes one or more optical signals of modes of the same or similar propagation constants.
  • the first optical signal is an optical signal of one or more modes.
  • the mode demultiplexer is further configured to convert the second optical signal into an optical signal output of a preset mode.
  • the first optical signal is received from the input port by the mode multiplexer; and the received first optical signal is converted into a mode corresponding to the input port according to the corresponding relationship between the input port of the optical signal and the module.
  • a second optical signal of one or more modes in the group multiplexing the converted second optical signal into a multimode optical fiber; the mode demultiplexer receiving the second optical signal; determining the second optical signal
  • the output of the received second optical signal from the corresponding output port does not require replacement of the existing optical fiber in the data center, and the transmission of the single optical fiber is improved.
  • the capacity realizes the transmission of big data, realizing the rapid expansion of the transmission capacity, thereby improving the total bandwidth utilization of the system.
  • an embodiment of the present invention further provides a data communication device 1000, which includes a processor 1010, a memory 1020, and a bus system 1030.
  • the processor 1010 and the memory 1020 pass through the bus.
  • the system 1030 is connected to the memory 1020 for storing instructions, and the processor 1010 is configured to execute the instructions stored by the memory 1020.
  • the processor 1010 is configured to receive a first optical signal from an input port, and convert the received first optical signal into a module corresponding to the input port according to a correspondence between an input port of the optical signal and a module. a second optical signal of one or more modes; multiplexing the converted second optical signal into a multimode optical fiber for transmission.
  • the processor 1010 is further configured to receive a second optical signal, determine a module to which the second optical signal belongs, and correspondingly receive the received second optical signal according to a corresponding relationship between the output port and the module. Output port output.
  • the processor 1010 may be a central processing unit (“CPU"), and the processor 1010 may also be other general-purpose processors, digital signal processors (DSPs). , application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) Or other programmable logic devices, discrete gates 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 1020 can include read only memory and random access memory and provides instructions and data to the processor 1010. A portion of the memory 1020 may also include a non-volatile random access memory. For example, the memory 1020 can also store information of the device type.
  • the bus system 1030 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 the bus system 1030 in the figure.
  • each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 1010 or an instruction in a 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 module 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 1020, and the processor 1010 reads the information in the memory 1020 and performs the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • 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 separated, 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 in the form of a software functional unit.
  • 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 U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

本发明公开了一种数据数据传输方法、装置和系统。其中所述方法包括：从第一端口号对应的第一端口接收第一模式的光信号；根据第一端口号与第一模组号的对应关系，将所述接收的第一模式的光信号转换成所述第一模组号标识的第一模组所承载的第二模式的光信号，其中，所述第一模组号标识的第一模组所承载的第二模式的光信号包括一种或者多种模式的光信号；输出转换后的第二模式的光信号，通过提升单根光纤的传输容量实现大数据的传输，实现了传输容量的快速扩容，进而提高了系统总带宽利用率。

Description

一种数据传输的方法、装置和系统 技术领域
本发明涉及通信领域，尤其涉及通信领域中数据传输的方法、装置和系统。
背景技术
随着大数据、云计算等应用的不断发展，数据中心、移动承载等市场呈现出强劲的增长态势。由于采用多模光纤时可采用相对低廉的激光器，具有系统成本低的优点，从而在数据中心、移动承载等短距离传输具有很强的竞争力。
同时，随着数据中心、移动承载网络的规模增长，为了控制光纤规模，对单纤容量的需求也越来越高。现有技术主要采用并行系统方案，例如在40Gbps、100Gbps、400Gbps的并行系统中，分别采用4、10、16对10Gbps、10Gbps、25Gbps的收发器将光信号承载到4根、10根、16根并行光纤中，进而实现40Gbps、100Gbps、400Gbps的网络传输。、但是，这种做法是通过将数根光纤进行合并来实现大容量数据的传输，并未提升单根光纤的传输容量，随着网络容量、速率的提升，如何提高单根光纤的传输容量亟需解决。
发明内容
本发明实施例提供了一种数据传输的方法、装置和系统，通过提升单根光纤的传输容量实现大数据的传输，实现了传输容量的快速扩容，进而提高了系统总带宽利用率。
第一方面，提供了一种数据传输的方法，该方法包括：
从输入端口接收第一光信号；
根据光信号的输入端口与模组的对应关系，将所述接收的第一光信号转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号；
将转换后的所述第二光信号复用至多模光纤中传输。
在第一方面，第一种实施方式中，所述第一光信号为一个或多个模式的光信号。
结合第一方面或者第一种实施方式，在第二种实施方式中，所述模组包括一个或多个传播常数相同或相近的模式的光信号。
第二方面，提供了一种数据传输的方法，该方法包括：
接收第二光信号；
确定所述第二光信号所属的模组；
根据输出端口与模组的对应关系，将所述接收到的第二光信号从对应的输出端口输出。
结合第二方面，在第一方式中，所述方法还包括：
将所述第二光信号转换成预先设定的模式的光信号输出。
结合第二方面、第二种实施方式中，所述第二光信号为一个或多个模式的光信号。
结合第二方面，在第三种实施方式中，所述模组包括一个或多个传播常数相同或相近的模式的光信号。
第三方面，一种模式复用器，所述模式复用器包括：
第一端口处理单元，用于从输入端口接收第一光信号；以及根据第一处理器的指令，将所述转换后的所述第二光信号复用至多模光纤中传输；
所述第一处理器，用于根据光信号的输入端口与模组的对应关系，将所述接收的第一光信号转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号，指令所述第一端口处理单元将所述转换后的所述第二光信号复用至多模光纤中传输。
结合第三方面，在第三方面的第一种实施方式中，所述第一光信号为一个或多个模式的光信号。
结合第三方面，在第三方面的第二种实施方式中，所述模组包括一个或多个传播常数相同或相近的模式的光信号。
第四方面，一种模式解复用器，所述模式解复用器包括：
第二端口处理单元，用于接收第二光信号；根据第二处理器的指令，将所述接收到的第二光信号从对应的输出端口输出；
所述第二处理器，用于确定所述第二光信号所属的模组；根据输出端口与模组的对应关系，获取与所述接收到的第二光信号对应的输出端口；指令所述第二端口处理单元将所述接收到的第二光信号从对应的输出端口输出。
结合第四方面，在第四方面的第一种实施方式中，所述第二处理器，还用于将所述第二光信号转换成预先设定的模式的光信号；指令所述第二端口处理单元将转换后的信号从对应的输出端口输出；
所述第二端口处理单元，还用于根据所述第二处理器的指令，将所述转换后的光信号从所述对应的端口输出。
结合第四方面，在第四方面的第二种实施方式中，所述第二光信号为一个或多个模式的光信号。
结合第四方面，在第四方面的第三种实施方式中，所述模组包括一个或多个传播常数相同或相近的模式的光信号。
第五方面，一种空分复用系统，所述空分复用系统至少包括：上述提到的第三方面的实施例。
结合第五方面，在第五方面的第一种实施方式中，所述系统还包括：上述提到的第四方面的实施例。
第六方面，一种数据通信装置，所述装置包括：处理器、存储器和总线系统，所述处理器和所述存储器通过所述总线系统相连，所述存储器用于存储指令，所述处理器用于执行所述存储器存储的指令，
其中，所述处理器用于：从输入端口接收第一光信号；根据光信号的输入端口与模组的对应关系，将所述接收的第一光信号转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号；将转换后的所述第二光信号复用至多模光纤中传输。
第七方面，一种数据通信装置，所述装置包括：处理器、存储器和总线系统，所述处理器和所述存储器通过所述总线系统相连，所述存储器用于存储指令，所述处理器用于执行所述存储器存储的指令，
其中，所述处理器用于：接收第二光信号；确定所述第二光信号所属的模组；根据输出端口与模组的对应关系，将所述接收到的第二光信号从对应的输出端口输出。
基于上述技术方案，本发明实施例通过模式解复用器从输入端口接收第一光信号；根据光信号的输入端口与模组的对应关系，将所述接收的第一光信号转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号将转换后的所述第二光信号复用至多模光纤中传输，不需要对数据中心的现有光纤进行更换，通过提升单根光纤的传输容量实现大数据的传输，实现了传输容量的快速扩容，进而提高了系统总带宽利用率。
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简单地介绍，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1A是根据本发明实施例的一种应用场景的示意性框图；
图1B是根据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数据通信方法的示意性流程图；
图3是根据本发明实施例的数据通信方法的另一示意性流程图；
图4是根据本发明实施例的数据通信方法的一具体描述流程图；
图5是根据本发明实施例的一种多模光纤传输方法的示意性框图；
图6是根据本发明实施例的另一种多模光纤传输方法的示意性框图；
图7是根据本发明实施例的又一种多模光纤传输方法的示意性框图；
图8是根据本发明实施例的数据通信装置的示意性框图；
图9根据本发明实施例的数据通信装置的另一示意性框图；
图10根据本发明实施例的数据通信装置的又一示意性框图。
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1A示出了根据本发明实施例的一种应用场景的示意性框图。如图1所示，该系统为一种基于多模光纤的空分复用系统(Spatial Division Multiplexing，SDM)包括：发射机、模式复用器、模式解复用器以及接收机；其中，所述发射机分别通过多模光纤与所述模式复用器连接，所述模式复用器与所述模式解复用器通过一条多模光纤连接，所述模式解复用器通过多模光纤与接收机连接，所述模式复用器将所述各个发射机通过多模光纤发送的光信号复用到所述模式复用器与所述模式解复用器之间的这条多模光纤上；所述模式解复用器，用于将接收的光信号，通过与之相连接的各条多模光纤，发送给接收机进行数据处理和恢复。其中，所述模式复用器上有多个输入端口，所述模式解复用器上有多个输出端口，其中，所述模式复用器上的输入端口与所述模式解复用器上的输出端口有对应关系，例如：从模式复用器上的第一端口接收的光信号，在模式解复用器上通过模式复用器上的 第一端口转发出去。
所述的发射机和接收机分别包括各自的发射器和接收器，用于发送光信号以及接收光信号。
如图2所示，图1B为另一种网络架构图，具体描述发射机与模式复用器集成在一起以及接收机与模式复用器集成在一起的结构图。
发射模块包括：发射机与模式复用器，发射机包括：n个激光驱动器和包含n个激光器的激光器阵列，其中，发射机与模式复用器可直接进行空间耦合，或采用波导进行耦合，以取消发射机和模式复用器之间的多模光纤。
接收模块包括：模式解复用器和接收机，所述接收机包括：包含n个光电探测器和跨阻放大器TIA的接收机阵列，以及n个限幅放大器中，其中，接收机与模式解复用器可直接进行空间耦合，或采用波导进行耦合，以取消接收机与模式解复用器之间的多模光纤。
所述发射模块以及所述接收模块的功能请参见下面实施例的具体描述。
图2示出了根据本发明实施例的一种数据传输的方法的示意性流程图，该方法可以由数据通信装置例如图1中的模式复用器执行，其中上述数据传输的方法可以应用于图1的组网架构图。如图2所示，该方法包括：
S200，模式复用器从输入端口接收第一光信号；。
S202，模式复用器根据光信号的输入端口与模组的对应关系，将所述接收的第一光信号转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号。
S204，模式复用器将转换后的所述第二光信号复用至多模光纤中传输。
进一步地，所述第一光信号为一个或多个模式的光信号。
进一步地，所述模组包括一个或多个传播常数相同或相近的模式的光信号。
本发明公开了一种数据数据传输方法通过模式复用器从输入端口接收第一光信号；根据光信号的输入端口与模组的对应关系，将所述接收的第一光信号转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号；将转换后的所述第二光信号复用至多模光纤中传输，通过提升单根光纤的传输容量实现大数据的传输，实现了传输容量的快速扩容，进而提高了系统总带宽利用率。
图3示出了根据本发明实施例的一种数据传输的方法的示意性流程图， 该方法可以由数据通信装置例如图1中的模式解复器执行，其中上述数通通信的方法可以应用于图1的组网架构图。如图3所示，该方法包括：
S300，模式解复用器接收第二光信号。
S302，模式解复用器确定所述第二光信号所属的模组。
S304、模式解复用器根据输出端口与模组的对应关系，将所述接收到的第二光信号从对应的输出端口输出。
进一步地，所述方法还包括：
模式解复用器将所述第二光信号转换成预先设定的模式的光信号输出。
进一步地，所述第二光信号为一个或多个模式的光信号。
进一步地，所述模组包括一个或多个传播常数相同或相近的模式的光信号。
本发明公开了一种数据数据传输方法，通过模式解复用器接收第二光信号；确定所述第二光信号所属的模组；根据输出端口与模组的对应关系，将所述接收到的第二光信号从对应的输出端口输出，通过提升单根光纤的传输容量实现大数据的传输，实现了传输容量的快速扩容，进而提高了系统总带宽利用率。
图4示出了根据本发明实施例的一种数据传输的方法的具体流程图，该方法可以由数据通信装置例如图1中的模式解复器执行，其中上述数通通信的方法可以应用于图1的组网架构图。如图4所示，该方法包括：
S400、发射机发射第一模式的光信号。
下面具体结合图5，图5为一种多模光纤传输方法的示意性框图。如图5，发射机发射光信号通过多模光纤发送给模式复用器。
进一步地，系统预先将不同模式的光信号划分为多个模组。每个模组作为一个整体承载一路光信号，每个模组可包括一个或多个传播常数相同或相近的模式的光信号，例如，将模式为LP01的光纤划分为一个模组1，即模组1包括模式为LP01的光信号；将LP11a和LP11b划分为模组2；将模式分别为LP02，LP21a，LP21b划分为模组3，依次类推。
进一步地，所述发射机可以采用垂直腔面发射激光器(Vertical-Cavity Surface-Emitting Laser,VCSEL)，也可以采用分布式反馈激光器(Distributed Feedback Laser，DFB)，还可以采用法布里-珀罗(Fabry-perot FP)激光器。
进一步地，发射机可采用基于开关键控(OOK，On-Off Keying)调制方 式将数据信号调制至光信号上进行传输，发射机也可采用相移键控(PSK，Phase Shift Keying)调制、正交振幅调制(QAM，Quadrature Amplitude Modulation)、脉冲幅度调制(PAM，Pulse Amplitude Modulation)等调制方式将数据信号调制至光信号上进行传输；接收机可采用直接检测方式检测光信号，也可采用相干检测方式检测该光信号。进一步地，为了消除光信号在光纤中传输时不同模式间的串扰，可在发射机侧进行预均衡以消除其他通道的干扰，也可在接收机侧进行滤波处理以消除其他通道的干扰，还可以同时在发射机侧进行预均衡、接收机侧进行滤波处理以消除其他通道的干扰。
S402、模式复用器从输入端口接收第一光信号。
参考图5，模式复用器从输入端口1的接收第一发射机发射的光信号；从输入端口2接收第二发射机发射的光信号，依此类推。
具体地，模式复用器与所述发射机之间的连接的光纤为多模光纤，以及模式复用器与模式解复用器之间的光纤也采用多模光纤。S404、模式复用器根据光信号的输入端口与模组的对应关系，将所述接收的第一光信号转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号。
其中，所述模式复用器的输入端口与模组有对应关系。例如，如图5，模式复用器从端口号1接收第一发射机发射的光信号，根据输入端口与模组的对应关系，将从端口1的接收第一发射机发射的光信号转换成模组1中的LP01模的光信号，。这里若输入的光信号就是LP01光信号，而端口1对应的模组1的模式也为LP01光信号，则不进行模式转换，仍然以LP01光信号。又例如：模式复用器从端口号为2的输入端口接收第二发射机发射的光信号，根据端口2和模组2的对应关系，将从端口号2接收的第二发射机发射的光信号转换成模组2中的LP11a模和/或LP11b模的光信号，将从端口号3接收的第三发射机发射的光信号转换成模组3中的LP02模和/或LP21a模和/或LP21b模的光信号，并将转换后的各个模式的光信号进行复用至多模光纤进行输出。
另外，在光纤中传输时，由于所述模组包括一个或多个传播常数相同或相近的模式的光信号，所以模组与模组之间的串扰比较小，所以如此划分可以减少各个模组之间的串扰。例如：模组1的LP01光信号主要仍然以其自身模式传输，极少部分会串扰到其它模组中传输；LP11a和/或LP11b同属于模组2，其传播常数基本相同，所以在光纤中传输时会相互串扰耦合，传输至模式解复用器处将同时存在LP11a和LP11b模；同样地，LP02和/或LP21a和/ 或LP21b在光纤中传输时也会相互串扰耦合，传输至模式解复用器处将同时存在LP02光信号、LP21a光信号和LP21b光信号。
S406、模式解复用器接收第二光信号，确定所述第二光信号所属的模组。
具体地，所述模式解复用器根据不同模组包括不同模式的光信号，确定接收的第二光信号所属的模组。
S408、模式解复用器根据输出端口与模组的对应关系，将所述接收到的第二光信号从对应的输出端口输出。
具体地，多模光纤上传输的不同模组的光信号，根据输出端口与模组的对应关系，将所述不同模组的光信号根据所述输出端口号与模组号的对应关系转发至模式解复用器的不同的输出端口。
如图5所示，模式解复用器接收到多模光纤传输的各个模组的光信号，例如，模组1包括LP01模光信号；模组2包括：LP11a模的光信号、LP11b模光信号；模组3包括：LP02模光信号、LP21a模光信号和LP21b模光信号。所述模式解复用器收到上述不同模组的光信号后，根据所述光信号所在的模组号，查询模组号与输出端口号的对应关系，匹配获得所述光信号对应的输出端口号，将所述光信号转发至该端口号对应的模式解复用器的输出端口。例如：模式解复用器接收模组1的LP01光信号，查询模组与端口的对应关系，获知模组1的光信号通过端口1转发，则所述模式解复用器将模组1的LP01光信号通过端口1转发出去，经多模光纤传输后输入接收机进行数据恢复。
可选地，所述方法还包括：
所述模式解复用器，还用于将所述第二光信号转换成预先设定的模式的光信号输出。
如图6所示，为另一种数据传输的方法的示意性框图。图6中，对于模式复用器的工作过程与图5一致，不同的是在模式解复用器执行的动作。例如：模式解复用器按照预先设置的采用LP01模光信号进行输出，则所述模式解复用器还用于将接收到的模组2的LP11a模和/或LP11b模光信号进行转换，转换成预先设置的LP01模光信号，通过端口2进行输出；若模式解复用器接收的就是模组1的LP01模的光信号，且预先设置转发出去也是LP01模的光信号，则不需要进行转换。同理，所述模式解复用器将接收到的模组3包括的LP02模光信号、LP21a模光信号和LP21b模光信号转换成LP01模光信号后输出至输出端口3，通过端口3转发出去，经多模光纤传输后输入接收机进行数据恢 复。
可选地，所述方法还可以包括：
如图7所示，图7为另一种数据传输的方法，图7与图5以及图7与图6的区别在于发射机发射的是多种模式的光信号，所述模式复用器上每个端口上可以接收不同模式的光信号，其它流程都相同，即图8中的模式复用器输入端口上可以输入不同模式的光信号，而图5和图7中的模式复用器上输入一种模式的光信号，其余关于模式解复用器等执行的流程均相同，可以参考。
具体地，如图5、图6所示，所述发射机发射单一模式的光信号在多模光纤中传输。所述发射机发射单一模式的光信号可以通过采用单横模激光器实现，也可以通过模式滤除法、偏心注入法或模斑整形法等模式选择激射技术保证只有单一模式的光信号在多模光纤中传输。为了减小光信号在光纤中发生模式串扰，所示的单一模式的光信号可以为LP01模的光信号；如图7所示，所述发射机可以采用普通多模发射机，其与多模光纤耦合时会激发出多个模式的光信号，进而在多模光纤中传输。模式复用器通过多模光纤接收到该信号后，根据模组号与输入端口号的对应关系，将接收的多个模式的光信号转换成与端口号(接收端口的端口号)对应模式的光信号，并复用到多模光纤中传输。以图7为例，发射机采用普通激光器，发射的光信号经过多模光纤时，激发出LP01模、LP11a模、LP11b模、LP02模等模式的光信号，模式复用器接收到输入端口1的LP01模、LP11a模、LP11b模、LP02模等模式的光信号后，根据输入端口1与模组1的对应关系，将上述接收到的光信号转换成模组1所包括的模式的光信号，模式复用器接收到输入端口2的LP01模、LP11a模、LP11b模、LP02模等模式的光信号后，根据模组2与输入端口2的对应关系，将其转换成模组2中LP11a模或/和LP11b模光信号然后将其复用在光纤上传输。
所述模式解复用器的功能与图5以及图6一样，这里简单描述，不做详细描述。所述模式解复用器通过多模光纤接收不同模组号的光信号，例如：模式解复用器接收模组2的光信号，所述模组2包括LP11a光信号和LP11b光信号，模式解复用器可以将这些光信号找到端口2后，通过端口2直接转发出去，如图7以及图5所示；或者模式解复用器将接收的不同模组的光信号转换成预先设置的模组号对应的模式的光信号后，通过端口2输出，例如图7所示。
进一步地，如果发射机和模式耦合器之间的多模光纤较长，发射机发射 的LP01模光信号经过光纤传输后有一部分光信号串扰至其他模组，模式复用器可先滤除高阶模组的信号后再进行模式转换。
S410、所述接收机接收不同模组的光信号，对接收的光信号进行数据恢复。
进一步地，还可将发射机和模式复用器都集成至光模块中，将模式解复用器和接收机也集成至光模块中，此时发射机和模式复用器、接收机和模式解复用器还可直接进行空间耦合，或采用波导进行耦合，以取消发射机和模式复用器、接收机和模式解复用器之间的多模光纤，采用控制模式复用器输入端口的模式即可。
本发明实施例通过模式复用器从输入端口接收第一光信号；根据光信号的输入端口与模组的对应关系，将所述接收的第一光信号转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号；将转换后的所述第二光信号复用至多模光纤中传输；模式解复用器接收第二光信号；确定所述第二光信号所属的模组；根据输出端口与模组的对应关系，将所述接收到的第二光信号从对应的输出端口输出不需要对数据中心的现有光纤进行更换，通过提升单根光纤的传输容量实现大数据的传输，实现了传输容量的快速扩容，进而提高了系统总带宽利用率。
图8为一种模式复用器的结构示意框图。如图8所示，模式复用器包括：
第一端口处理单元800，用于从输入端口接收第一光信号；以及根据第一处理器的指令，将所述转换后的所述第二光信号复用至多模光纤中传输；
所述第一处理器802，用于根据光信号的输入端口与模组的对应关系，将所述接收的第一光信号转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号，指令所述第一端口处理单元将所述转换后的所述第二光信号复用至多模光纤中传输。
进一步地，所述第一光信号为一个或多个模式的光信号。
进一步地，所述模组包括一个或多个传播常数相同或相近的模式的光信号。
上述模式复用器的具体功能请参见图1-图7以及图1-图7对应的实施例的具体描述，这里就不再赘述了。
本发明公开了一种模式复用器，通过模式复用器从输入端口接收第一光信号；根据光信号的输入端口与模组的对应关系，将所述接收的第一光信号 转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号；将转换后的所述第二光信号复用至多模光纤中传输，通过提升单根光纤的传输容量实现大数据的传输，实现了传输容量的快速扩容，进而提高了系统总带宽利用率。
图9为一种模式复用器的结构示意框图。如图9所示，模式解复用器包括：
第二端口处理单元900，用于接收第二光信号；根据第二处理器的指令，将所述接收到的第二光信号从对应的输出端口输出；
所述第二处理器902，用于确定所述第二光信号所属的模组；根据输出端口与模组的对应关系，获取与所述接收到的第二光信号对应的输出端口；指令所述第二端口处理单元将所述接收到的第二光信号从对应的输出端口输出。
进一步地，将所述第二光信号转换成预先设定的模式的光信号输出。
进一步地，所述第二光信号为一个或多个模式的光信号。
进一步地，所述模组包括一个或多个传播常数相同或相近的模式的光信号。上述模式解复用器的具体功能请参见图1-图7以及图1-图7对应的实施例的具体描述，这里就不再赘述了。
本发明公开了一种模式解复用器，通过模式解复用器接收第二光信号；确定所述第二光信号所属的模组；根据输出端口与模组的对应关系，将所述接收到的第二光信号从对应的输出端口输出，通过提升单根光纤的传输容量实现大数据的传输，实现了传输容量的快速扩容，进而提高了系统总带宽利用率。
如图1A或者图1B所示，所述空分复用系统至少包括模式复用器和模式解复用器，其中，所述模式复用器可以包括如装置图8所示的功能，所述模式解复用器包括如图9所示的功能，具体：
所述模式复用器，用于从输入端口接收第一光信号；根据光信号的输入端口与模组的对应关系，将所述接收的第一光信号转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号；将转换后的所述第二光信号复用至多模光纤中传输。
所述模式解复用器，用于接收第二光信号；确定所述第二光信号所属的模组；根据输出端口与模组的对应关系，将所述接收到的第二光信号从对应的输出端口输出。
进一步地，所述模组包括一个或多个传播常数相同或相近的模式的光信号。
进一步地，所述第一光信号为一个或多个模式的光信号。
进一步地，所述模式解复用器，还用于将所述第二光信号转换成预先设定的模式的光信号输出。
具体的请参见上面装置图8与图9对应的实施例的描述，这里就不再赘述。
本发明实施例通过模式复用器从输入端口接收第一光信号；根据光信号的输入端口与模组的对应关系，将所述接收的第一光信号转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号；将转换后的所述第二光信号复用至多模光纤中传输；模式解复用器接收第二光信号；确定所述第二光信号所属的模组；根据输出端口与模组的对应关系，将所述接收到的第二光信号从对应的输出端口输出不需要对数据中心的现有光纤进行更换，通过提升单根光纤的传输容量实现大数据的传输，实现了传输容量的快速扩容，进而提高了系统总带宽利用率。
如图10所示，本发明实施例还提供了一种数据通信装置1000，其特征在于，该装置1000包括处理器1010、存储器1020和总线系统1030，该处理器1010和该存储器1020通过该总线系统1030相连，该存储器1020用于存储指令，该处理器1010用于执行该存储器1020存储的指令，
其中，该处理器1010用于从输入端口接收第一光信号；根据光信号的输入端口与模组的对应关系，将所述接收的第一光信号转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号；将转换后的所述第二光信号复用至多模光纤中传输。
所述处理器1010，还用于接收第二光信号；确定所述第二光信号所属的模组；根据输出端口与模组的对应关系，将所述接收到的第二光信号从对应的输出端口输出。
具体处理器1010的具体执行流程可以参见图1-7所示的流程图对应的描述，这里就不再赘述。
应理解，在本发明实施例中，该处理器1010可以是中央处理单元(Central Processing Unit，简称为“CPU”)，该处理器1010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1020可以包括只读存储器和随机存取存储器，并向处理器1010提供指令和数据。存储器1020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1020还可以存储设备类型的信息。
该总线系统1030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1030。
在实现过程中，上述方法的各步骤可以通过处理器1010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1020，处理器1010读取存储器1020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。
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。
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B。
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，为了描述的方便和简洁，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)、随机存取存储器(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 (20)

  1. 一种数据传输的方法，其特征在于，所述方法包括：
    从输入端口接收第一光信号；
    根据光信号的输入端口与模组的对应关系，将所述接收的第一光信号转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号；
    将转换后的所述第二光信号复用至多模光纤中传输。
  2. 根据权利要求1所述的数据传输方法，其特征在于，
    所述第一光信号为一个或多个模式的光信号。
  3. 根据权利要求1或者2所述的数据传输方法，其特征在于，所述模组包括一个或多个传播常数相同或相近的模式的光信号。
  4. 一种数据传输的方法，其特征在于，所述方法包括：
    接收第二光信号；
    确定所述第二光信号所属的模组；
    根据输出端口与模组的对应关系，将所述接收到的第二光信号从对应的输出端口输出。
  5. 根据权利要求4所述的数据传输方法，其特征在于，所述方法还包括：
    将所述第二光信号转换成预先设定的模式的光信号输出。
  6. 根据权利要求4或者5所述的数据传输方法，其特征在于，
    所述第二光信号为一个或多个模式的光信号。
  7. 根据权利要求4所述的数据传输方法，其特征在于，所述模组包括一个或多个传播常数相同或相近的模式的光信号。
  8. 一种模式复用器，其特征在于，所述模式复用器包括：
    第一端口处理单元，用于从输入端口接收第一光信号；以及根据第一处理器的指令，将所述转换后的所述第二光信号复用至多模光纤中传输；
    所述第一处理器，用于根据光信号的输入端口与模组的对应关系，将所述接收的第一光信号转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号，指令所述第一端口处理单元将所述转换后的所述第二光信号复用至多模光纤中传输。
  9. 根据权利要求8所述的模式复用器，其特征在于，所述第一光信号为一个或多个模式的光信号。
  10. 根据权利要求8所述的模式复用器，其特征在于，所述模组包括一个或多个传播常数相同或相近的模式的光信号。
  11. 一种模式解复用器，其特征在于，所述模式解复用器包括：
    第二端口处理单元，用于接收第二光信号；根据第二处理器的指令，将所述接收到的第二光信号从对应的输出端口输出；
    所述第二处理器，用于确定所述第二光信号所属的模组；根据输出端口与模组的对应关系，获取与所述接收到的第二光信号对应的输出端口；指令所述第二端口处理单元将所述接收到的第二光信号从对应的输出端口输出。
  12. 根据权利要求11所述的模式解复用器，其特征在于，所述第二处理器，还用于将所述第二光信号转换成预先设定的模式的光信号；指令所述第二端口处理单元将转换后的信号从对应的输出端口输出；
    所述第二端口处理单元，还用于根据所述第二处理器的指令，将所述转换后的光信号从所述对应的端口输出。
  13. 根据权利要求11或者12所述的模式解复用器，其特征在于，
    所述第二光信号为一个或多个模式的光信号。
  14. 根据权利要求11所述的模式解复用器，其特征在于，所述模组包括一个或多个传播常数相同或相近的模式的光信号。
  15. 一种空分复用系统，其特征在于，所述空分复用系统至少包括：如权利要求8-10所述的模式复用器。
  16. 根据权利要求15所述的空分复用系统，其特征在于，所述系统还包括：如权利要求11-14所述的模式解复用器。
  17. 根据权利要求15所述的空分复用系统，其特征在于，所述空分复用系统还包括：发射机，用于发射第一光信号，其中，所述第一光信号为一个或多个模式的光信号。
  18. 根据权利要求15所述的空分复用系统，其特征在于，所述空分复用系统还包括：接收机，用于接收第二信号，其中，所述第二光信号为一个或多个模式的光信号；将接收的第二光信号进行数据恢复。
  19. 一种数据通信装置，其特征在于，所述装置包括：处理器、存储器和总线系统，所述处理器和所述存储器通过所述总线系统相连，所述存储器用于存储指令，所述处理器用于执行所述存储器存储的指令，
    其中，所述处理器用于：从输入端口接收第一光信号；根据光信号的输 入端口与模组的对应关系，将所述接收的第一光信号转换成与所述输入端口对应的模组中的一个或多个模式的第二光信号；将转换后的所述第二光信号复用至多模光纤中传输。
  20. 一种数据通信装置，其特征在于，所述装置包括：处理器、存储器和总线系统，所述处理器和所述存储器通过所述总线系统相连，所述存储器用于存储指令，所述处理器用于执行所述存储器存储的指令，
    其中，所述处理器用于：接收第二光信号；确定所述第二光信号所属的模组；根据输出端口与模组的对应关系，将所述接收到的第二光信号从对应的输出端口输出。
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