WO2020041931A1 - 一种海底网络设备 - Google Patents

一种海底网络设备 Download PDF

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Publication number
WO2020041931A1
WO2020041931A1 PCT/CN2018/102511 CN2018102511W WO2020041931A1 WO 2020041931 A1 WO2020041931 A1 WO 2020041931A1 CN 2018102511 W CN2018102511 W CN 2018102511W WO 2020041931 A1 WO2020041931 A1 WO 2020041931A1
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Prior art keywords
cpl
level
cpls
pump
pump laser
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PCT/CN2018/102511
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English (en)
French (fr)
Inventor
许昌武
李羽赫
金戈
王燕
马立苹
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华为海洋网络有限公司
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Priority to US16/980,478 priority Critical patent/US11955764B2/en
Priority to PCT/CN2018/102511 priority patent/WO2020041931A1/zh
Priority to CN201880058980.7A priority patent/CN111344965B/zh
Priority to JP2020549010A priority patent/JP7119110B2/ja
Priority to EP18931525.2A priority patent/EP3748874A4/en
Publication of WO2020041931A1 publication Critical patent/WO2020041931A1/zh

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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
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • 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
    • H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
    • H01S3/06716—Fibre compositions or doping with active elements
    • 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
    • H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
    • H01S3/06729—Peculiar transverse fibre profile
    • H01S3/06737—Fibre having multiple non-coaxial cores, e.g. multiple active cores or separate cores for pump and gain
    • 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
    • H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • H01S3/094011—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre with bidirectional pumping, i.e. with injection of the pump light from both two ends of the fibre
    • 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
    • H01S3/094061—Shared pump, i.e. pump light of a single pump source is used to pump plural gain media in parallel
    • 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
    • H01S3/09408—Pump redundancy
    • 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
    • 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
    • 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
    • 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
    • H01S3/094049—Guiding of the pump light
    • H01S3/094053—Fibre coupled pump, e.g. delivering pump light using a fibre or a fibre bundle
    • 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
    • H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
    • H01S3/16—Solid materials
    • H01S3/1601—Solid materials characterised by an active (lasing) ion
    • H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
    • H01S3/1608—Solid materials characterised by an active (lasing) ion rare earth erbium
    • 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
    • H01S3/23—Arrangements of two or more lasers not provided for in groups H01S3/02 - H01S3/22, e.g. tandem arrangements of separate active media
    • H01S3/2383—Parallel arrangements

Definitions

  • the present application relates to the field of submarine optical cable communications, and in particular, to a submarine network device.
  • EDFA erbium-doped fiber amplifier
  • Pump laser is an active optical device, and its failure rate is higher than other passive optical devices. Failure of the pump laser will cause the optical repeater to fail to work normally. Therefore, a redundant pump design is often required to improve the optical repeater. Overall reliability.
  • the single fiber pair shown in Figure 1 has a 4 ⁇ 2 architecture (4 pump lasers ⁇ 2 optical fibers), and the four pump lasers output by the four pump lasers are transmitted through a fiber coupler (CPL) module. After coupling and power redistribution, each pump laser provides half of the pump energy for each of the two erbium-doped fibers. When some (up to three) pump lasers fail, the remaining working pump lasers can still provide part of the energy for the two erbium-doped fibers, so that the two EDFA modules still maintain a certain amplification capability.
  • the number of pump lasers is twice the number of EDFA modules. Since each group of optical fibers corresponds to 2 EDFA modules, the number of pump lasers needs to be The doubling results in higher costs, power consumption, and heat consumption.
  • the embodiments of the present application provide a submarine network device, which reduces the cost, power consumption, and heat consumption of the submarine network device.
  • the first aspect of the embodiments of the present application provides a submarine network device, including an optical fiber set, a pump laser set, an erbium-doped fiber amplifier EDFA set, a first-level fiber coupler CPL set, and a second-level CPL set.
  • the first-level CPL set contains N first-level CPLs
  • the second-level CPL set contains N second-level CPLs, where N is an integer greater than or equal to 3.
  • the fiber set is used to combine the pump laser set, the first-level CPL set, and the second-level CPL set.
  • each first-level CPL in the first-level CPL set is connected to at least one pump laser
  • the output port of each second-level CPL in the second-level CPL set is connected to at least one EDFA
  • first-level Each first-level CPL in the CPL set is adjacent to the other two first-level CPLs in the first-level CPL set
  • each second-level CPL in the second-level CPL set is adjacent to the other two second-level CPLs in the second-level CPL set.
  • the CPLs are adjacent to each other.
  • the output ports of each first-level CPL in the first-level CPL set are connected to two different second-level CPLs.
  • the two second-level CPLs are separated by a second-level CPL.
  • the input ports of two secondary CPLs are connected separately A CPL two, spaced between a CPL a different one of two CPL;
  • Each pump laser in the pump laser set is used to emit pump lasers, and each first-level CPL in the first-level CPL set is used to couple the received pump lasers and output two first-stage pump lasers ,
  • the two primary pump lasers are output to two different secondary CPLs, and each secondary CPL in the secondary CPL set is used to couple the received primary pump lasers and output at least one secondary Pump the laser to at least one EDFA.
  • the pump laser energy of each EDFA is provided by at least two pump lasers. Even if a part of the pump laser corresponding to each EDFA fails, the EDFA module still maintains a certain amplification capability. On this basis, since the input port of each primary CPL is connected to at least one pump laser, and the output port of each secondary CPL is connected to at least one EDFA, the number of pump lasers does not need to be maintained at twice the number of EDFA modules. Can reduce the cost, power consumption and heat consumption of submarine network equipment.
  • Each EDFA in the EDFA set corresponds to a fiber, and the output ports of each secondary CPL in the secondary CPL set are connected to 2 EDFAs.
  • Each two-channel fiber corresponding to the two EDFAs connected to each secondary CPL output port constitutes a group of fiber pairs.
  • One optical fiber corresponding to one EDFA connected to each secondary CPL output port and one optical fiber corresponding to one EDFA connected to one secondary CPL output port adjacent to each secondary CPL constitute a group of optical fiber pairs.
  • FPs optical fiber pairs
  • LTE communication transmission equipment
  • Each level 1 CPL input port in the level 1 CPL set is connected to 2 pump lasers, and each level 1 CPL output from each level 1 CPL contains 2 pumps connected to each level 1 CPL input port Each 50% energy emitted by the laser, each secondary pump laser output by each secondary CPL in the secondary CPL set contains 25% energy each emitted by 4 pump lasers connected to 2 primary CPL input ports Each secondary CPL is connected to 2 primary CPLs.
  • the energy of the pump laser of each EDFA is provided by the corresponding four pump lasers, and each pump laser contributes 25% of the energy.
  • This solution allows a maximum of three pump lasers. Failed, the EDFA module still maintains a certain amplification capacity, which improves the system reliability; and the number of pump lasers is the same as the number of EDFAs, the pump laser uses less, the cost is low, the total power consumption is small, and the total heat consumption is small.
  • Each level CPL input port in the level 1 CPL set is connected to a pump laser, and each level CPL output from each level CPL contains a pump connected to each level CPL input port 50% of the energy emitted by the laser, and each secondary pump laser output by each secondary CPL in the secondary CPL set contains 25% of the energy emitted by two pump lasers connected to the two primary CPL input ports, Each secondary CPL is connected to 2 primary CPLs.
  • Each level 1 CPL input port in the level 1 CPL set is connected to 4 pump lasers, and each level 1 CPL output from each level 1 CPL pump contains 4 pumps connected to each level 1 CPL input port
  • Each 50% energy emitted by the laser, each secondary pump laser output by each secondary CPL in the secondary CPL set contains 25% energy each emitted by 8 pump lasers connected to 2 primary CPL input ports
  • Each secondary CPL is connected to 2 primary CPLs.
  • the pump laser set, the EDFA set, the first-level CPL set, and the second-level CPL set are respectively set on different planes.
  • different types of components in the submarine network equipment are respectively disposed on different planes, so that there is more space for wiring between different types of components.
  • Each pump laser in the pump laser set, each EDFA in the EDFA set, each first CPL in the first CPL set, and each second CPL in the second CPL set are placed in a ring shape.
  • each component in the submarine network device is placed in a ring shape, which can form a complete closed loop, has structural symmetry, and supports infinite expansion on this basis.
  • the second aspect of the embodiments of the present application provides a submarine network device, including a fiber set, a pump laser set, an erbium-doped fiber amplifier EDFA set, a first-level fiber coupler CPL set, a second-level CPL set, and a third-level CPL set, where
  • the first-level CPL set contains N first-level CPLs
  • the second-level CPL set contains N second-level CPLs
  • the third-level CPL set contains N third-level CPLs
  • N is an integer greater than or equal to 5
  • the optical fiber set is used for pumping
  • the pump laser set, the first-level CPL set, the second-level CPL set, the third-level CPL set, and the EDFA set are connected.
  • At least one pump laser and the third-level CPL set are connected to the input ports of each first-level CPL in the first-level CPL set.
  • At least one EDFA is connected to the output port of each third-level CPL in the first-level CPL set.
  • Each first-level CPL in the first-level CPL set is adjacent to the other two first-level CPLs in the first-level CPL set.
  • Each second-level CPL is adjacent to the other two second-level CPLs in the second-level CPL set
  • each third-level CPL in the third-level CPL set is adjacent to the other two third-level CPLs in the third-level CPL set
  • the output ports of each level CPL in the level 1 CPL set are respectively Connect two different secondary CPLs, and separate the two secondary CPLs connected to the output ports of each primary CPL.
  • Two secondary CPLs are separated by the input ports of each secondary CPL in the secondary CPL set. Connect two different first-level CPLs separately. Two first-level CPLs are separated from each other.
  • the output ports of each second-level CPL in the second-level CPL set are connected to different two third-level CPLs.
  • each three-level CPL in the three-level CPL set is respectively connected to different two second-level CPLs, and are connected to the input ports of each three-level CPL.
  • Each pump laser in the pump laser set is used to emit pump lasers, and each first-level CPL in the first-level CPL set is used to couple the received pump lasers and output two first-stage pump lasers
  • the two first-stage pump lasers are respectively output to two different second-stage CPLs connected to the output ports of each first-stage CPL.
  • Each second-stage CPL in the second-stage CPL set is used for the received first-stage pump.
  • the pump laser is coupled and outputs two secondary pump lasers to two different three-level CPLs.
  • Each three-level CPL in the three-level CPL set is used to couple the received secondary pump lasers and output them. At least one three-stage pump laser to at least one EDFA.
  • the energy of the pump laser of each EDFA is provided by at least four pump lasers corresponding to them. Even if a part of the pump laser corresponding to each EDFA fails, the EDFA module still maintains a certain Amplification capability.
  • the pump laser since the input port of each first-level CPL is connected to at least one pump laser, and the output port of each third-level CPL is connected to at least one EDFA, then in the submarine network equipment of this solution, the pump laser The number is not necessarily greater than the number of EDFA modules, so the pump laser usage is small, which reduces the cost, power consumption and heat consumption of submarine network equipment.
  • Each EDFA in the EDFA set corresponds to one optical fiber, and the output ports of each three-level CPL in the three-level CPL set are connected to two EDFAs.
  • Each three-level CPL output port is connected to two EDFA corresponding two optical fibers to form a group of optical fiber pairs.
  • One optical fiber corresponding to one of the EDFAs connected to each three-level CPL output port and one optical fiber corresponding to one of the EDFAs connected to one three-level CPL output port adjacent to each three-level CPL constitute a group of optical fiber pairs.
  • Each level 1 CPL input port in the level 1 CPL set is connected to 2 pump lasers, and each level 1 CPL output from each level 1 CPL contains 2 pumps connected to each level 1 CPL input port
  • Each 50% energy emitted by the laser, each secondary pump laser output by each secondary CPL in the secondary CPL set contains 25% energy each emitted by 4 pump lasers connected to 2 primary CPL input ports
  • Each second-level CPL is connected to 2 first-level CPLs
  • each third-level pump laser output by each third-level CPL in the third-level CPL set includes 8 pump lasers connected to 4 first-level CPL input ports For each 12.5% of the energy emitted, each three-level CPL is connected to two second-level CPLs, and two second-level CPLs are connected to four first-level CPLs.
  • the energy of the pump laser of each EDFA is provided by the corresponding eight pump lasers, and each pump laser contributes 12.5% of the energy.
  • This scheme allows a maximum of seven pump lasers. Failed, the EDFA module still maintains a certain amplification capacity, which improves the system reliability; and the number of pump lasers is the same as the number of EDFAs, the pump laser uses less, costs are low, the total power consumption is small, and the total heat consumption is small.
  • Each level CPL input port in the level 1 CPL set is connected to a pump laser, and each level CPL output from each level CPL contains a pump connected to each level CPL input port
  • Each 50% energy emitted by the laser, each secondary pump laser output by each secondary CPL in the secondary CPL set contains 25% energy each emitted by 2 pump lasers connected to 2 primary CPL input ports
  • Each second-level CPL is connected to two first-level CPLs, and each third-level pump laser output by each third-level CPL in the third-level CPL set includes four pump lasers connected to four first-level CPL input ports For each 12.5% of the energy emitted, each three-level CPL is connected to two second-level CPLs, and two second-level CPLs are connected to four first-level CPLs.
  • Each level 1 CPL input port in the level 1 CPL set is connected to 4 pump lasers, and each level 1 CPL output from each level 1 CPL pump contains 4 pumps connected to each level 1 CPL input port
  • Each 50% energy emitted by the laser, each secondary pump laser output by each secondary CPL in the secondary CPL set contains 25% energy each emitted by 8 pump lasers connected to 2 primary CPL input ports
  • Each second-level CPL is connected to 2 first-level CPLs
  • each third-level pump laser output by each third-level CPL in the third-level CPL set includes 16 pump lasers connected to 4 first-level CPL input ports For each 12.5% of the energy emitted, each three-level CPL is connected to two second-level CPLs, and two second-level CPLs are connected to four first-level CPLs.
  • the pump laser set, the EDFA set, the first-level CPL set, the second-level CPL set, and the third-level CPL set are respectively set on different planes.
  • different types of components in the submarine network equipment are respectively disposed on different planes, so that there is more space for wiring between different types of components.
  • Each pump laser in the pump laser set, each EDFA in the EDFA set, each first level CPL in the first level CPL set, each second level CPL in the second level CPL set, and each third level CPL in the third level CPL set They are placed in a ring.
  • each component in the submarine network device is placed in a ring shape, which can form a complete closed loop, has structural symmetry, and supports infinite expansion on this basis.
  • a third aspect of the embodiments of the present application provides a submarine network device, including a pump laser set, an erbium-doped fiber amplifier EDFA set, a first-level fiber coupler CPL set, and a second-level CPL set, where the first-level CPL set includes at least Three first-level CPLs, the second-level CPL set includes at least three second-level CPLs, and at least one pump laser is connected to an input port of each first-level CPL in the first-level CPL set, the second-level CPL set
  • the output port of each second-level CPL in is connected to at least one EDFA in the EDFA set, and the output ports of at least one first-level CPL in the first-level CPL set are respectively connected to two different second-level CPLs, the different Two second-level CPLs are separated by one second-level CPL, and at least one second-level CPL input port in the second-level CPL set is connected to two different first-level CPLs, respectively.
  • Each pump laser in the pump laser set is used to emit a pump laser, and at least one first-level CPL in the first-level CPL set is used to couple the received pump lasers and output two channels one Stage pump laser, the two first-stage pump lasers are respectively output to the two different secondary CPLs, and at least one secondary CPL in the secondary CPL set is used for pumping the received primary pump
  • the laser is coupled and outputs at least one secondary pump laser to the at least one EDFA.
  • the pump laser energy of each EDFA is provided by at least two pump lasers. Even if a part of the pump laser corresponding to each EDFA fails, the EDFA module still maintains a certain amplification capability. On this basis, since the input port of each first-level CPL is connected to at least one pump laser, the number of output ports of each second-level CPL connected to at least one EDFA pump laser does not need to be maintained at twice the number of EDFA modules. Reduce the cost, power consumption and heat consumption of submarine network equipment.
  • Each EDFA in the EDFA set corresponds to a fiber, and the output ports of each secondary CPL in the secondary CPL set are connected to 2 EDFAs.
  • Each two-channel fiber corresponding to the two EDFAs connected to each secondary CPL output port constitutes a group of fiber pairs.
  • One optical fiber corresponding to one EDFA connected to each secondary CPL output port and one optical fiber corresponding to one EDFA connected to one secondary CPL output port adjacent to each secondary CPL constitute a group of optical fiber pairs.
  • FIG. 1 is a schematic diagram of a pump redundancy scheme of a single fiber pair 4 ⁇ 2 architecture in the prior art
  • FIG. 2 is a schematic diagram of a pump redundancy scheme of a single optical fiber 2 ⁇ 1 architecture in the prior art
  • FIG. 3 is a schematic diagram of a pump redundancy scheme of a single fiber pair 2 ⁇ 2 architecture in the prior art
  • FIG. 4 is a schematic diagram of another pump redundancy scheme of a single fiber pair 2 ⁇ 2 architecture in the prior art
  • FIG. 5 is a schematic diagram of another pump redundancy scheme of a single fiber pair 2 ⁇ 2 architecture in the prior art
  • FIG. 6 is a three-dimensional structure diagram of a submarine network device in a 5-fiber pair scenario according to an embodiment of the present application
  • FIG. 7 is a plan unfolded view of a submarine network device in a 5-fiber pair scenario according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of connection of internal devices of a submarine network device according to an embodiment of the present application.
  • FIG. 9 is an anatomical side view of a submarine network device in a 5-fiber pair scenario according to an embodiment of the present application.
  • FIG. 10 is a plan development view of a submarine network device in a 3-fiber pair scenario according to an embodiment of the present application.
  • FIG. 11 is a plan unfolded view of a submarine network device in an 8-fiber pair scenario according to an embodiment of the present application
  • FIG. 12 is a plan unfolded view of another submarine network device in a 5-fiber pair scenario according to an embodiment of the present application
  • FIG. 13 is a side anatomy view of another submarine network device in a 5-fiber pair scenario according to an embodiment of the present application.
  • FIG. 14 is a side anatomy view of another submarine network device in a 5-fiber pair scenario according to an embodiment of the present application.
  • 15 is a side anatomy view of a submarine network device in a 10-fiber pair scenario according to an embodiment of the present application.
  • FIG. 16 is a schematic diagram of an optical fiber pair in an embodiment of the present application.
  • the embodiments of the present application provide a submarine network device, which can reduce the cost, power consumption, and heat consumption of the submarine network device.
  • the submarine network equipment in this application may specifically be a submarine optical repeater.
  • Long-distance submarine optical fiber optical cable communication systems (usually links above 500km) need to be configured with submarine optical repeaters to implement Amplification of transmitted optical signals.
  • Submarine optical repeaters work underwater for a long time and need to guarantee a design life of 25 years. Since the repair of underwater equipment of the submarine cable system requires the use of a construction boat, making underwater maintenance difficult, long, and costly. Therefore, underwater optical repeaters need to have high reliability to reduce the risk of failure and maintenance.
  • the submarine optical repeater in this application is based on EDFA technology.
  • the gain medium of EDFA is erbium-doped fiber.
  • a pump laser is required to provide excitation energy for erbium-doped fiber.
  • the pump laser emitted by the pump laser is wavelength-divided.
  • the multiplexer and the signal light are coupled into the same fiber and injected into the erbium-doped fiber.
  • the erbium-doped fiber absorbs the pump laser, the erbium ions transition to an excited state.
  • the optical signal photons undergo stimulated radiation when they pass through, generating the same photons as the signal photons. Photons with frequency, same direction, and same polarization to achieve signal light amplification.
  • Pump laser is an active optical device, and its failure rate is higher than other passive optical devices. Failure of the pump laser will cause the optical repeater to fail to work normally. Therefore, a redundant pump design is often required to improve the optical repeater. Overall reliability.
  • the industry's existing pump redundancy solutions are mainly single fiber 2 ⁇ 1 architecture, single fiber pair 2 ⁇ 2 architecture, and single fiber pair 4 ⁇ 2 architecture.
  • Figure 2 shows the pump redundancy design of a single fiber 2 ⁇ 1 architecture (2 pump lasers ⁇ 1 optical fiber). After the pump lasers output by the two pump lasers are coupled by a polarization beam combiner, Erbium-doped fiber input to one fiber, that is, two pump lasers support one EDFA module together. When one of the pump lasers fails, half of the pump power is still input into the erbium-doped fiber, so that the EDFA module still maintains a certain amplification capability.
  • Figure 3 shows a pump redundancy design for a single fiber pair 2 ⁇ 2 architecture (2 pump lasers ⁇ 2 optical fibers).
  • the two pump lasers support a pair of (two-way) EDFA modules together. After the two pump lasers output by the two pump lasers are coupled through the fiber coupler, the optical power is redistributed, so that each pump laser provides half of the pump energy for each of the two erbium-doped fibers. When one of the pump lasers fails, the other pump laser can still provide energy for two erbium-doped fibers, so that the two EDFA modules still maintain a certain amplification capability.
  • Figure 4 shows another pump redundancy design for a single fiber pair 2 ⁇ 2 architecture (2 pump lasers ⁇ 2 optical fibers).
  • the pump laser output by each pump laser is split by an optical fiber splitter. Divided into two sub-pumped lasers. Then, the sub-pumped laser of one pump laser and the sub-pumped laser of the other pump laser are coupled together through a fiber coupler to provide pump energy for one erbium-doped fiber. When one of the pump lasers fails, the other pump laser can still provide energy for two erbium-doped fibers, so that the two EDFA modules still maintain a certain amplification capability.
  • Figure 5 shows another pump redundancy design for a single fiber pair 2 ⁇ 2 architecture (2 pump lasers ⁇ 2 optical fibers).
  • the first pump laser is divided into the first sub-pump laser and the first pump laser.
  • the two-pumped laser is input into the erbium-doped fiber in the two optical fibers, respectively.
  • the second pump laser is divided into a third sub-pump laser and a fourth sub-pump laser, which are input to the erbium-doped fiber in the two optical fibers, respectively.
  • the other pump laser can still provide energy for two erbium-doped fibers, so that the two EDFA modules still maintain a certain amplification capability.
  • FIG. 1 there is a pump redundancy design scheme for a single fiber pair 4 ⁇ 2 architecture (4 pump lasers ⁇ 2 optical fibers) as shown in Figure 1.
  • the number of pump lasers is EDFA
  • the number of modules is doubled. Since each group of optical fibers corresponds to 2 EDFA modules, the number of pump lasers needs to be doubled for each additional group of fiber pairs, resulting in higher costs.
  • the pump sharing of any fiber pair cannot be realized in the application scenario of multiple fiber pairs. Therefore, a new type of pump redundancy design scheme is provided in this application, which can realize multiple pump redundancy designs.
  • the pump sharing between any fiber pairs; and, without increasing the number of pump lasers, each EDFA can also have the pump light input of 4 pump lasers at the same time, which can achieve 4 ⁇ 4 pump redundancy.
  • FIG. 6 is a three-dimensional structural diagram of a submarine optical repeater provided in an embodiment of the present application.
  • the submarine optical repeater includes the following components: optical fiber, pump laser, EDFA, first-level CPL, and second-level CPL. .
  • the above-mentioned pump laser, first-level CPL, and second-level CPL are The number of EDFA is not less than 3, the number of the above EDFA needs to correspond to the number of optical fiber pairs, that is, each fiber needs to correspond to one EDFA, so the number of EDFA is not less than 6.
  • the CPL can be a CPL with the same structure. This solution only distinguishes the functions. Specifically, the first-level CPL and the second-level CPL in this application can have a port loss of 3dB including 2 input ports and 2 output ports. CPL.
  • a group of fiber pairs refers to two optical fibers connected to a receiving port and a transmitting port of a communication transmission equipment (LTE), and the two optical fibers Forms a communication link that receives and sends all the way. Different fiber pairs remain isolated from each other, that is, there is no physical connection between different fiber pairs.
  • FIG. 7 is a plan development view of the above FIG. 6.
  • the pump laser, EDFA, first-level CPL, and second-level CPL are respectively disposed on different planes; and each pump laser, each EDFA, each The level CPL and each level CPL are placed in a ring to form a closed structure; at least one pump laser is connected to the input port of each level CPL (such as the input of each level CPL shown in Figure 6 or Figure 7) Port can be connected to two pump lasers), and the output port of each secondary CPL is connected to two EDFAs; each primary CPL in the primary CPL set is in phase with the other two primary CPLs in the primary CPL set Neighbor, each secondary CPL in the secondary CPL set is adjacent to the other two secondary CPLs in the secondary CPL set; the output port of the primary CPL and the input port of the secondary CPL are cross-connected by optical fiber There is a secondary CPL between the two different secondary CPLs connected to each primary CPL, and there is
  • Each first-level CPL has a second-level CPL placed symmetrically with it, that is, the first-level CPL
  • the two CPL can be on the same axis, and the shaft are perpendicular to each plane and each two CPL a CPL is located.
  • the pump laser is used to transmit the pump laser; the first-stage CPL is used to couple the received pump laser and output two first-stage pump lasers, and the two first-stage pump lasers output by it are respectively output to different Two secondary CPLs. Because the output port of the primary CPL and the input port of the secondary CPL are cross-connected by optical fiber, the two secondary CPLs are separated by another secondary CPL.
  • the secondary CPL is used for Coupling the received primary pump laser and output two secondary pump lasers to two different EDFAs.
  • the EDFA includes an input port, an output port, and a pump power input port, where the signal light is input from the EDFA input port through an optical fiber, and the secondary pump laser output by the secondary CPL is input from the pump power input port to the EDFA.
  • the optical signal processed by EDFA is then output from the output port of EDFA through the optical fiber.
  • any three first-level CPLs are a first-level CPL, a second-level CPL, and a third-level CPL, and the three second-level CPLs placed symmetrically therewith are first-level CPLs.
  • Second-level CPL, and third-level CPL where the second-level CPL is adjacent to the first-level CPL and third-level CPL, respectively, and the second-level CPL is adjacent to the first-level CPL and first-level CPL, respectively.
  • the third- and second-level CPLs are adjacent; the output port of the first-level CPL is connected to the input port of the second-level CPL, the output port of the second-level CPL is connected to the input port of the first-level CPL, and the output of the second-level CPL
  • the port is connected to the input port of the third-level CPL, the output port of the third-level CPL is connected to the input port of the second-level CPL;
  • the output port of the first-level CPL is connected to the pump power input port of the first EDFA, and the second
  • the output port of the secondary CPL is connected to the pump power input of the second EDFA, the output port of the second secondary CPL is connected to the pump power input of the third EDFA, and the output port of the third secondary CPL is connected to the pump of the fourth EDFA Pu power input port.
  • the submarine optical repeater in the embodiment of the present application is not necessarily a cylindrical structure shown in FIG. 5, and may also be other external structures to wrap the above-mentioned internal devices, for example, a rectangular parallelepiped structure may also be used. , Specifically not limited here.
  • first-level CPLs and second-level CPLs are generally not less than three in actual applications, but it is not strictly limited, the embodiment shown in FIG. 8 only arbitrarily selects three sets of correspondences.
  • the first-level CPL and second-level CPL are described and the connection relationship between them is not the complete structure of the submarine optical repeater provided in this application. The following will combine different numbers of multi-fiber pair scenarios to explain the embodiments of this application.
  • the submarine optical repeater provided is further described:
  • FIG. 9 is a side anatomical view of the above FIG. 6, which corresponds to the structure of the submarine optical repeater in a 5-fiber pair application scenario in the embodiment of the present application, including: 10 pump lasers (P01 to P10 ), 5 primary CPLs (CPL1-1 to CPL1-5), 5 secondary CPLs (CPL2-1 to CPL2-5), and 10 EDFA modules (A01 to A10);
  • Each 2 pump lasers are a group, and the input port of each level CPL is connected to a group of pump lasers.
  • the input ports of CPL1-1 are connected to P01 and P02, and the input ports of CPL1-2 are connected to P03 and Input ports of P04, CPL1-3 are connected to P05 and P06, input ports of CPL1-4 are connected to P07 and P08, and input ports of CPL1-5 are connected to P09 and P10;
  • connection method between the first-level CPL and the second-level CPL is as follows: the output port of CPL1-1 is connected to the input port of CPL2-2 and the input port of CPL2-5, and the output port of CPL1-2 is connected to CPL2-1. Input ports and CPL2-3 input ports, CPL1-3 output ports are connected to CPL2-2 input ports and CPL2-4 input ports, respectively, and CPL1-4 output ports are connected to CPL2-3 input ports and Input ports of CPL2-5, output ports of CPL1-5 are connected to input ports of CPL2-1 and input ports of CPL2-4 respectively;
  • each secondary CPL is connected to two EDFAs. Specifically, the output port of CPL2-1 is connected to A01 and A10, the output port of CPL2-2 is connected to A02 and A03, and the output port of CPL2-3 is connected to A04. And A05, CPL2-4 output ports are connected to A06 and A07, and CPL2-5 output ports are connected to A08 and A09;
  • each EDFA corresponds to one optical fiber
  • the optical fiber is connected to an input port and an output port of the EDFA.
  • Two different secondary CPLs are connected to two optical fibers corresponding to two EDFAs to form one.
  • Group of optical fiber pairs specifically, the optical fibers corresponding to A01 and A02 constitute the optical fiber pair FP1, A03 and A04 correspond to the optical fibers constitute the optical fiber pair FP2, A05 and A06 constitute the optical fiber corresponding to the optical fiber pair FP3, A07 and A08
  • the optical fiber corresponding to the optical fiber pair FP4, A09 and A10 constitutes the optical fiber pair FP5.
  • each first-stage pump laser includes this group (2) pumps 50% of the energy of the laser, for example, the pump light of P01 and P02 is input to CPL1-1, and then CPL1-1 outputs 50% of the energy of P01 and P02 to CPL2-2 and CPL2-5, that is, CPL1-1 receives To 100% of P01 and 100% of P02, CPL2-2 receives 50% of P01 and 50% of P02, and CPL2-5 also receives 50% of P01 and 50% of P02;
  • the first-stage pump lasers from two different first-stage CPLs are coupled through the second-stage CPL, and the second-stage CPL outputs two second-stage pump lasers.
  • Each second-stage pump laser provides energy for one EDFA.
  • the secondary pump laser contains 4 pump lasers each with 25% energy.
  • CPL2-1 receives 2 primary pump lasers output by CPL1-2 and CPL1-5, that is, CPL2-1 receives P03, P04, P09 and P10 each have 50% of the energy
  • CPL2-1 outputs 2 secondary pump lasers to A01 and A10
  • each secondary pump laser includes 25% of each of P03, P04, P09, and P10.
  • this solution can determine which set of pump lasers are abnormal by detecting the output power change of the EDFA. For example: A01, A10, and A04, A05 have the same power reduction. It can be seen from the reverse pushback method that a group of pump lasers that collectively provide energy for A01, A10, A04, and A05 are P03 and P04, respectively. It can be determined that the pump laser P03 or P04 connected to the CPL1-2 is abnormal.
  • the two first-stage pump lasers output by each first-level CPL and the two second-stage pump lasers output by each second-level CPL are coupled according to a ratio of 1: 1.
  • the ratio of the two pump lasers output can also be adjusted according to different needs, which is not limited here.
  • the pump light of P01 and P02 is input to CPL1-1, and then CPL1- 1 Output 30% energy of P01 and 70% energy of P02 to CPL2-2, CPL1-1 output 70% energy of P01 and 30% energy of P02 to CPL2-5.
  • the energy of the pump laser of each EDFA is provided by the corresponding four pump lasers, and each pump laser contributes 25% of the energy.
  • This solution may allow a maximum of three pump lasers to fail.
  • the EDFA module still maintains certain amplification capabilities, which improves system reliability; and the number of pump lasers is the same as the number of EDFAs, with less pump laser usage, low cost, small total power consumption, and small total heat consumption; in addition,
  • the output power of EDFA is detected to determine which set of pump lasers is abnormal, which provides effective help for system maintenance.
  • FIG. 10 corresponds to the structure of the submarine optical repeater in the three-fiber pair application scenario in the embodiment of the present application, including: six pump lasers (P01 to P06), three first-level CPL ( CPL1-1 to CPL1-3), three secondary CPLs (CPL2-1 to CPL2-3), and six EDFA modules (A01 to A06);
  • Each 2 pump lasers are a group, and the input port of each level CPL is connected to a group of pump lasers. Specifically, the input ports of CPL1-1 are connected to P01 and P02, and the input ports of CPL1-2 are connected to P03 and Input ports of P04 and CPL1-3 are connected with P05 and P06;
  • the connection between the first-level CPL and the second-level CPL is as follows: the output port of CPL1-1 is connected to the input port of CPL2-2 and the input port of CPL2-3, and the output port of CPL1-2 is connected to CPL2-1. Input port and CPL2-3 input port, CPL1-3 output port is connected to CPL2-1 input port and CPL2-2 input port respectively;
  • each secondary CPL is connected to two EDFAs. Specifically, the output port of CPL2-1 is connected to A01 and A06, the output port of CPL2-2 is connected to A02 and A03, and the output port of CPL2-3 is connected to A04. And A05;
  • each EDFA corresponds to one optical fiber
  • the optical fiber is connected to an input port and an output port of the EDFA.
  • Two different secondary CPLs are connected to two optical fibers corresponding to two EDFAs to form one optical fiber.
  • the optical fiber pair specifically, the optical fibers corresponding to A01 and A02 constitute the optical fiber pair FP1, the optical fibers corresponding to A03 and A04 constitute the optical fiber pair FP2, and the optical fibers corresponding to A05 and A06 constitute the optical fiber pair FP3.
  • each first-stage pump laser includes this group (2) pumps 50% of the energy of the laser, for example, the pump light of P01 and P02 is input to CPL1-1, and then CPL1-1 outputs 50% of the energy of P01 and P02 to CPL2-2 and CPL2-3 respectively, that is, CPL1-1 receives To 100% of P01 and 100% of P02, CPL2-2 receives 50% of P01 and 50% of P02, and CPL2-3 also receives 50% of P01 and 50% of P02;
  • the first-stage pump lasers from two different first-stage CPLs are coupled through the second-stage CPL, and the second-stage CPL outputs two second-stage pump lasers.
  • Each second-stage pump laser provides energy for one EDFA.
  • the secondary pump laser contains 4 pump lasers each with 25% energy.
  • CPL2-1 receives 2 primary pump lasers output from CPL1-2 and CPL1-3, that is, CPL2-1 receives P03, P04, P05 and P06 each have 50% of the energy
  • CPL2-1 outputs 2 secondary pump lasers to A01 and A06
  • each secondary pump laser includes 25% of the energy of each of P03, P04, P05 and P06.
  • this solution can determine which set of pump lasers are abnormal by detecting the output power change of the EDFA. For example: A01, A06 and A04, A05 have the same power reduction.
  • a group of pump lasers that collectively provide energy for A01, A06, A04, and A05 are P03 and P04, respectively. It can be determined that the pump laser P03 or P04 connected to the CPL1-2 is abnormal.
  • the two first-stage pump lasers output by each first-level CPL and the two second-stage pump lasers output by each second-level CPL are coupled according to a ratio of 1: 1.
  • the ratio of the two pump lasers output can also be adjusted according to different needs, which is not limited here.
  • the pump light of P01 and P02 is input to CPL1-1, and then CPL1- 1 Output 30% energy of P01 and 70% energy of P02 to CPL2-2, CPL1-1 output 70% energy of P01 and 30% energy of P02 to CPL2-5.
  • FIG. 11 corresponds to the structure of the submarine optical repeater in the 8-fiber pair application scenario in the embodiment of the present application, including: 16 pump lasers (P01 to P16), 8 first-level CPL ( CPL1-1 to CPL1-8), 8 secondary CPLs (CPL2-1 to CPL2-8), and 16 EDFA modules (A01 to A16);
  • Each 2 pump lasers are a group, and the input port of each level CPL is connected to a group of pump lasers.
  • the input ports of CPL1-1 are connected to P01 and P02
  • the input ports of CPL1-2 are connected to P03 and
  • the input ports of P04 and CPL1-3 are connected to P05 and P06
  • the input ports of CPL1-4 are connected to P07 and P08
  • the input ports of CPL1-5 are connected to P09 and P10
  • the input ports of CPL1-6 are connected to P11 and P12.
  • Input ports of CPL1-7 are connected to P13 and P14
  • input ports of CPL1-8 are connected to P15 and P16;
  • the connection method between the first-level CPL and the second-level CPL is specifically, the output port of CPL1-1 is connected to the input port of CPL2-2 and the input port of CPL2-8, and the output port of CPL1-2 is connected to CPL2-1.
  • Input ports and CPL2-3 input ports, CPL1-3 output ports are connected to CPL2-2 input ports and CPL2-4 input ports, respectively, and CPL1-4 output ports are connected to CPL2-3 input ports and
  • the input port of CPL2-5, the output port of CPL1-5 are connected to the input port of CPL2-4 and the input port of CPL2-6, and the output port of CPL1-6 is connected to the input port of CPL2-5 and CPL2-7 respectively.
  • Input port, CPL1-7 output port is connected to CPL2-6 input port and CPL2-8 input port
  • CPL1-8 output port is connected to CPL2-7 input port and CPL2-1 input port respectively;
  • each secondary CPL is connected to two EDFAs. Specifically, the output port of CPL2-1 is connected to A01 and A16, the output port of CPL2-2 is connected to A02 and A03, and the output port of CPL2-3 is connected to A04. And A05, CPL2-4 output ports are connected to A06 and A07, CPL2-5 output ports are connected to A08 and A09, CPL2-6 output ports are connected to A10 and A11, and CPL2-7 output ports are connected to A12 and A13 , CPL2-8 output ports are connected with A14 and A15;
  • each EDFA corresponds to one optical fiber, and the optical fiber is connected to an input port and an output port of the EDFA.
  • Two different secondary CPLs are connected to two optical fibers corresponding to two EDFAs to form one optical fiber.
  • Optical fiber pair specifically, the optical fiber corresponding to A01 and A02 constitutes the optical fiber pair corresponding to FP1, A03 and A04 constitute the optical fiber pair corresponding to FP2, the optical fiber corresponding to A05 and A06 constitute the optical fiber corresponding to fiber pair FP3, A07 and A08
  • the optical fibers corresponding to fiber pairs FP4, A09 and A10 constitute the optical fiber pairs corresponding to FP5, A11 and A12 constitute the optical fiber pairs FP6, the optical fibers corresponding to A13 and A14 constitute the optical fiber pairs and the optical fibers corresponding to FP7, A15 and A16 constitute the optical fiber pair FP8.
  • each first-stage pump laser includes this group (2) pumps 50% of the energy of the laser, for example, the pump light of P01 and P02 is input to CPL1-1, and then CPL1-1 outputs 50% of the energy of P01 and P02 to CPL2-2 and CPL2-8, that is, CPL1-1 receives To 100% of P01 and 100% of P02, CPL2-2 receives 50% of P01 and 50% of P02, and CPL2-8 also receives 50% of P01 and 50% of P02;
  • the first-stage pump lasers from two different first-stage CPLs are coupled through the second-stage CPL, and the second-stage CPL outputs two second-stage pump lasers.
  • Each second-stage pump laser provides energy for one EDFA.
  • the secondary pump laser contains 4 pump lasers each with 25% energy.
  • CPL2-1 receives 2 primary pump lasers output from CPL1-2 and CPL1-8, that is, CPL2-1 receives P03, P04, P15 and P16 each have 50% of the energy.
  • CPL2-1 outputs two secondary pump lasers to A01 and A16, and each secondary pump laser includes 25% of each of P03, P04, P15, and P16.
  • this solution can determine which set of pump lasers are abnormal by detecting the output power change of the EDFA. For example: A01, A16 and A04, A05 have the same power reduction. Through the backward pushback method, it can be seen that a group of pump lasers that collectively provide energy for A01, A16, A04, and A05 are P03 and P04, respectively. It can be determined that the pump laser P03 or P04 connected to the CPL1-2 is abnormal.
  • the two first-stage pump lasers output by each first-level CPL and the two second-stage pump lasers output by each second-level CPL are coupled according to a ratio of 1: 1.
  • the ratio of the two pump lasers output can also be adjusted according to different needs, which is not limited here.
  • the pump light of P01 and P02 is input to CPL1-1, and then CPL1- 1 Output 30% energy of P01 and 70% energy of P02 to CPL2-2, CPL1-1 output 70% energy of P01 and 30% energy of P02 to CPL2-5.
  • FIG. 9 to FIG. 11 are scenarios where two different secondary CPLs connect two optical fibers corresponding to two EDFAs to form a fiber pair.
  • this solution can also be the same.
  • a two-level CPL connects two optical fibers corresponding to two EDFAs to form an optical fiber pair.
  • the following uses the five-fiber pair application scenario as an example to introduce the structure of this submarine optical repeater:
  • the submarine optical repeater in the embodiment of the present application includes: 10 pump lasers (P01 to P10), 5 first-level CPLs (CPL1-1 to CPL1-5), and 5 second-level CPLs ( CPL2-1 to CPL2-5) and 10 EDFA modules (A01 to A10);
  • Each 2 pump lasers are a group, and the input port of each level CPL is connected to a group of pump lasers.
  • the input ports of CPL1-1 are connected to P01 and P02, and the input ports of CPL1-2 are connected to P03 and Input ports of P04, CPL1-3 are connected to P05 and P06, input ports of CPL1-4 are connected to P07 and P08, and input ports of CPL1-5 are connected to P09 and P10;
  • connection method between the first-level CPL and the second-level CPL is as follows: the output port of CPL1-1 is connected to the input port of CPL2-2 and the input port of CPL2-5, and the output port of CPL1-2 is connected to CPL2-1. Input ports and CPL2-3 input ports, CPL1-3 output ports are connected to CPL2-2 input ports and CPL2-4 input ports, respectively, and CPL1-4 output ports are connected to CPL2-3 input ports and Input ports of CPL2-5, output ports of CPL1-5 are connected to input ports of CPL2-1 and input ports of CPL2-4 respectively;
  • each secondary CPL is connected to two EDFAs. Specifically, the output port of CPL2-1 is connected to A01 and A02, the output port of CPL2-2 is connected to A03 and A04, and the output port of CPL2-3 is connected to A05.
  • the output ports of A06 and CPL2-4 are connected to A07 and A08, and the output ports of CPL2-5 are connected to A09 and A10.
  • the optical fibers corresponding to A01 and A02 constitute the optical fiber
  • the optical fibers corresponding to FP1, A03 and A04 constitute the optical fiber.
  • optical fibers corresponding to FP2, A05 and A06 constitute the optical fiber pair FP3
  • the optical fibers corresponding to A07 and A08 constitute the optical fiber pair FP4
  • the optical fibers corresponding to A09 and A10 constitute the optical fiber pair FP5.
  • optical fibers corresponding to the two EDFAs connected to each secondary CPL form an optical fiber pair, which is different from the solutions in the embodiments shown in FIG. 9 to FIG. 11.
  • each level CPL can also be connected to other numbers of pump lasers.
  • FIG. 13 is also a structure of a submarine optical repeater in a 5-fiber pair application scenario according to an embodiment of the present application, including: 5 pump lasers (P01 to P05), 5 first-level CPLs (CPL1-1 To CPL1-5), 5 secondary CPLs (CPL2-1 to CPL2-5), and 10 EDFA modules (A01 to A10);
  • This embodiment differs from the embodiment shown in FIG. 9 in that a pump laser is connected to the input port of each level CPL. Specifically, the input port of CPL1-1 is connected to P01, and the input port of CPL1-2 is connected to The input port of P02, CPL1-3 is connected to P03, the input port of CPL1-4 is connected to P04, and the input port of CPL1-5 is connected to P05;
  • FIG. 14 is also a structure of a submarine optical repeater in a 5-fiber pair application scenario according to an embodiment of the present application, including: 20 pump lasers (P01 to P20), 5 first-level CPLs (CPL1-1 To CPL1-5), 5 secondary CPLs (CPL2-1 to CPL2-5), 10 EDFA modules (A01 to A10), and 10 polarization beam combiners (PBC);
  • Each level of CPL can receive the energy provided by 4 pump lasers.
  • each 2 pump lasers are in a group, and the output port of each group of pump lasers is connected to the input port of 1 PBC.
  • the input port of the first-level CPL is connected with two different PBCs.
  • the PBC can combine two polarized lights with orthogonal polarization directions into one beam.
  • the PBC can combine the pump light output from two pump lasers, P01 and P02, into one.
  • the beam is output to CPL1-1
  • the other PBC can combine the pump light output from the pump lasers P03 and P04 into one beam, and output to CPL1-1 as well.
  • the CPL in the submarine optical repeater described in the above embodiment is divided into a first-level CPL and a second-level CPL.
  • this solution can also add a third-level CPL on this basis. The details are described below. description of:
  • FIG. 15 is a structure of a submarine optical repeater in a 10-fiber pair application scenario according to an embodiment of the present application, including: 20 pump lasers (P01 to P20), 10 first-level CPLs (CPL1-1 To CPL1-10), 10 secondary CPLs (CPL2-1 to CPL2-10), 10 tertiary CPLs (CPL3-1 to CPL3-10), and 20 EDFA modules (A01 to A20);
  • the pump laser, EDFA, first-level CPL, second-level CPL, and third-level CPL are respectively set on different planes; and each pump laser, each EDFA, each first-level CPL, each second-level CPL, and each third-level CPL are present.
  • each pump laser is connected to the input port of each level CPL (for example, the input port of each level CPL shown in Figure 15 can be connected to two pump lasers), each Two EDFAs are connected to the output ports of the third-level CPL; each first-level CPL in the first-level CPL set is adjacent to the other two first-level CPLs in the first-level CPL set, and each of the second-level CPL sets is The second-level CPL is adjacent to the other two second-level CPLs in the second-level CPL set, and each third-level CPL in the third-level CPL set is adjacent to the other two third-level CPLs in the third-level CPL set.
  • the output port of the CPL and the input port of the secondary CPL are cross-connected by optical fiber.
  • Two secondary CPLs connected to each primary CPL are separated by another two secondary CPLs.
  • CPL1-1's output port is connected to CPL2-2 and CPL2-9, and CPL2-2 and CPL2-9 are separated by CPL2-1 and CPL2-1 0;
  • the output port of the second-level CPL and the input port of the third-level CPL are also cross-connected through optical fibers, and the two third-level CPLs connected to each second-level CPL are separated by another third-level CPL, for example, such as As shown in Figure 15, the output port of CPL2-1 is connected to CPL3-2 and CPL3-10, and there is a CPL3-1 between CPL3-2 and CPL3-10.
  • the pump laser is used to transmit the pump laser; the first-stage CPL is used to couple the received pump laser and output two first-stage pump lasers, and the two first-stage pump lasers output by it are respectively output to different Two secondary CPLs; the secondary CPL is used to couple the received primary pump lasers and output two secondary pump lasers to two different secondary three CPLs; the secondary CPL is used to The two-stage pump laser is coupled and outputs two three-stage pump lasers to two different EDFAs.
  • Each 2 pump lasers are a group, and the input port of each level CPL is connected to a group of pump lasers.
  • the input ports of CPL1-1 are connected to P01 and P02
  • the input ports of CPL1-2 are connected to P03
  • the input ports of P04 and CPL1-3 are connected to P05 and P06
  • the input ports of CPL1-4 are connected to P07 and P08
  • the input ports of CPL1-5 are connected to P09 and P10
  • the input ports of CPL1-6 are connected to P11 and P12.
  • Input ports of CPL1-7 are connected to P13 and P14, input ports of CPL1-8 are connected to P15 and P16, input ports of CPL1-9 are connected to P17 and P18, and input ports of CPL1-10 are connected to P19 and P20;
  • the connection method between the first-level CPL and the second-level CPL is specifically, the output port of CPL1-1 is connected to the input port of CPL2-2 and the input port of CPL2-9, and the output port of CPL1-2 is connected to CPL2-3 respectively.
  • Input ports and CPL2-10 input ports, CPL1-3 output ports are connected to CPL2-1 input ports and CPL2-4 input ports, respectively, and CPL1-4 output ports are connected to CPL2-2 input ports and
  • the input port of CPL2-5, the output port of CPL1-5 are connected to the input port of CPL2-3 and the input port of CPL2-6, and the output port of CPL1-6 is connected to the input port of CPL2-4 and CPL2-7 respectively.
  • CPL1-7 output port is connected to CPL2-5 input port and CPL2-8 input port
  • CPL1-8 output port is connected to CPL2-6 input port and CPL2-9 input port
  • CPL1 The output port of -9 is connected to the input port of CPL2-7 and the input port of CPL2-10
  • the output port of CPL1-10 is connected to the input port of CPL2-8 and the input port of CPL2-1.
  • the connection between the second-level CPL and the third-level CPL is as follows: the output port of CPL2-1 is connected to the input port of CPL3-2 and the input port of CPL3-10, and the output port of CPL2-2 is connected to CPL3-1.
  • Input ports and CPL3-3 input ports, CPL2-3 output ports are connected to CPL3-2 input ports and CPL3-4 input ports, respectively, and CPL2-4 output ports are connected to CPL3-3 input ports and
  • the input port of CPL3-5, the output port of CPL2-5 are connected to the input port of CPL3-4 and the input port of CPL3-6, and the output port of CPL2-6 is connected to the input port of CPL3-5 and CPL3-7 respectively.
  • CPL2-7 output port is connected to CPL3-6 input port and CPL3-8 input port
  • CPL2-8 output port is connected to CPL3-7 input port and CPL3-9 input port
  • CPL2 The output port of -9 is connected to the input port of CPL3-8 and the input port of CPL3-10
  • the output port of CPL2-10 is connected to the input port of CPL3-9 and the input port of CPL3-1.
  • Each three-level CPL output port is connected to two EDFAs. Specifically, the CPL3-1 output port is connected to A01 and A20, the CPL3-2 output port is connected to A02 and A03, and the CPL3-3 output port is connected to A04. And A05, CPL3-4 output ports are connected to A06 and A07, CPL3-5 output ports are connected to A08 and A09, CPL3-6 output ports are connected to A10 and A11, and CPL3-7 output ports are connected to A12 and A13
  • the output ports of CPL3-8 are connected to A14 and A15, the output ports of CPL3-9 are connected to A16 and A17, and the output port of CPL3-10 is connected to A18 and A19;
  • each EDFA corresponds to one optical fiber, and the optical fiber is connected to an input port and an output port of the EDFA.
  • Two different three-level CPLs are connected to two optical fibers corresponding to two EDFAs to form an optical fiber pair.
  • the optical fibers corresponding to A01 and A02 constitute the optical fiber pair FP1
  • the optical fibers corresponding to A03 and A04 constitute the optical fiber pair FP2
  • the optical fibers corresponding to A05 and A06 constitute the optical fiber pair FP3
  • the optical fibers corresponding to A07 and A08 constitute the optical fiber pair FP4, A09
  • the optical fiber corresponding to A10 constitutes the optical fiber pair FP5, the optical fibers corresponding to A11 and A12 constitute the optical fiber pair FP6, the optical fibers corresponding to A13 and A14 constitute the optical fiber pair FP7, and the optical fibers corresponding to A15 and A16 constitute the optical fiber pair FP8, A17 and A18
  • the corresponding optical fibers constitute the optical fiber pair FP9, and the corresponding optical fibers constitute the optical fiber pair FP10.
  • each first-stage pump laser includes this group (2) pumps 50% of the energy of the laser, for example, the pump light of P01 and P02 is input to CPL1-1, and then CPL1-1 outputs 50% of the energy of P01 and P02 to CPL2-2 and CPL2-9, that is, CPL1-1 receives To 100% of P01 and 100% of P02, CPL2-2 receives 50% of P01 and 50% of P02, and CPL2-9 also receives 50% of P01 and 50% of P02;
  • the first-stage pump lasers from two different first-stage CPLs are coupled through the second-stage CPL, and the second-stage CPL outputs two second-stage pump lasers.
  • Each second-stage pump laser contains 4 pump lasers, each 25%.
  • CPL2-1 receives 2 first-stage pump lasers output by CPL1-3 and CPL1-10, that is, CPL2-1 receives 50% of the energy of each of P05, P06, P19, and P20, and CPL2-1 respectively Output 2 secondary pump lasers to CPL3-2 and CPL3-10, each secondary pump laser includes 25% of energy for each of P05, P06, P19 and P20;
  • the two-stage pump laser output from two different two-stage CPLs is coupled through the three-stage CPL, and the three-stage CPL outputs two three-stage pump lasers.
  • Each three-stage pump laser contains 8 pump lasers each at 12.5%.
  • Energy for example, CPL3-1 receives 2 secondary pump lasers from CPL2-2 and CPL2-10, and CPL2-2 receives 2 primary pump lasers from CPL1-1 and CPL1-4 , CPL2-10 receives 2 primary pump lasers output from CPL1-2 and CPL1-9, CPL1-1 is connected to P01 and P02, CPL1-4 is connected to P07 and P08, and CPL1-2 is connected to P03 and P04 and CPL1-9 are connected with P17 and P18.
  • CPL3-1 outputs two three-stage pump lasers to A01 and A20, where each three-stage pump laser contains P01, P02, P03, P04, P07, P08, The eight pump lasers P17 and P18 each have an energy of 12.5%.
  • the proportion of the two pump lasers output by the CPL at each level can also be adjusted according to different needs.
  • the specifics are not limited here.
  • the pump light of P01 and P02 is input to CPL1- 1.
  • CPL1-1 outputs 30% energy of P01 and 70% energy of P02 to CPL2-2
  • CPL1-1 outputs 70% energy of P01 and 30% energy of P02 to CPL2-9.
  • two optical fibers corresponding to two EDFAs connected to the same three-level CPL may form an optical fiber pair.
  • each level CPL can also be connected to other numbers of pump lasers.
  • the input port of each level CPL is connected to one or four pump lasers, which is not limited here.
  • the energy of the pump laser of each EDFA is provided by the corresponding 8 pump lasers, and each pump laser contributes 12.5% of the energy.
  • This solution can allow a maximum of 7 pump lasers to fail.
  • the EDFA module still maintains certain amplification capabilities, which improves system reliability; and the number of pump lasers is the same as the number of EDFAs, with less pump laser usage, low cost, small total power consumption, and small total heat consumption; in addition,
  • the output power of EDFA is detected to determine which set of pump lasers is abnormal, which provides effective help for system maintenance.

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Abstract

本申请实施例公开了一种海底网络设备，包括光纤集合、泵浦激光器集合、掺铒光纤放大器EDFA集合、一级光纤耦合器CPL集合及二级CPL集合，一级CPL集合包含N个一级CPL，二级CPL集合包含N个二级CPL，N为大于或等于3的整数，光纤集合用于将泵浦激光器集合、一级CPL集合、二级CPL集合以及EDFA集合连接起来，一级CPL集合中的每个一级CPL的输入端口至少连接有一个泵浦激光器，二级CPL集合中的每个二级CPL的输出端口至少连接有一个EDFA，一级CPL集合中的每个一级CPL的输出端口分别连接不同的两个二级CPL，不同的两个二级CPL之间相隔一个二级CPL，二级CPL集合中的每个二级CPL的输入端口分别连接不同的两个一级CPL，不同的两个一级CPL之间相隔一个一级CPL。

Description

一种海底网络设备 技术领域
本申请涉及海底光缆通信领域，尤其涉及一种海底网络设备。
背景技术
长距离海底光纤光缆通信系统(通常500km以上链路)需要配置海底光中继器以实现对传输光信号的放大。目前应用比较成熟的海底光中继器是基于掺铒光纤放大器(erbium doped fiber amplifier，EDFA)技术，EDFA的增益介质是掺铒光纤，EDFA正常工作时需要泵浦激光器(Pump Laser)为掺铒光纤提供激励能源。
泵浦激光器属于有源光器件，其失效率相对其他无源光器件较高，泵浦激光器失效会导致光中继器无法正常工作，因而往往需要进行泵浦冗余设计以提高光中继器的整体可靠性。例如，图1所示的单光纤对4×2架构(4支泵浦激光器×2路光纤)，四支泵浦激光器输出的四路泵浦激光经由光纤耦合器(Fiber Coupler，CPL)模块进行耦合和功率重新分配后，使每支泵浦激光器分别为两路掺铒光纤各提供一半的泵浦能量。当其中一部分(最多三支)泵浦激光器失效时，其余正常工作的泵浦激光器仍然能为两路掺铒光纤提供部分能量，使两路EDFA模块仍保持一定的放大能力。
然而，这种泵浦冗余设计方案中，泵浦激光器数量是EDFA模块数量的2倍，由于每一组光纤对应2个EDFA模块，因此每增加一组光纤对，泵浦激光器的数量需要成倍的增加，导致成本、功耗以及热耗较高。
发明内容
本申请实施例提供了一种海底网络设备，降低了海底网络设备的成本、功耗以及热耗。
有鉴于此，本申请实施例第一方面提供了一种海底网络设备，包括光纤集合、泵浦激光器集合、掺铒光纤放大器EDFA集合、一级光纤耦合器CPL集合及二级CPL集合，其中，一级CPL集合包含N个一级CPL，二级CPL集合包含N个二级CPL，N为大于或等于3的整数，光纤集合用于将泵浦激光器集合、一级CPL集合、二级CPL集合以及EDFA集合连接起来，一级CPL集合中的每个一级CPL的输入端口至少连接有一个泵浦激光器，二级CPL集合中的每个二级CPL的输出端口至少连接有一个EDFA，一级CPL集合中的每个一级CPL都与一级CPL集合中的另外2个一级CPL相邻，二级CPL集合中的每个二级CPL都与二级CPL集合中的另外2个二级CPL相邻，一级CPL集合中的每个一级CPL的输出端口分别连接不同的两个二级CPL，不同的两个二级CPL之间相隔一个二级CPL，二级CPL集合中的每个二级CPL的输入端口分别连接不同的两个一级CPL，不同的两个一级CPL之间相隔一个一级CPL；
泵浦激光器集合中的每个泵浦激光器用于发射泵浦激光，一级CPL集合中的每个一级CPL用于对接收到的泵浦激光进行耦合，并输出两路一级泵浦激光，两路一级泵浦激光分 别输出至不同的两个二级CPL，二级CPL集合中的每个二级CPL用于对接收到的一级泵浦激光进行耦合，并输出至少一路二级泵浦激光至至少一个EDFA。
在本申请实施方式中，每一路EDFA的泵浦激光能量都有至少2只泵浦激光器共同提供，即使与每一路EDFA相对应的其中一部分泵浦激光器失效，EDFA模块仍保持一定的放大能力，在此基础上，由于每个一级CPL的输入端口连接至少一个泵浦激光器，每个二级CPL的输出端口连接至少一个EDFA，泵浦激光器的数量不需要维持在EDFA模块数量的2倍，可以降低海底网络设备的成本、功耗以及热耗。
可选的，在一些可能的实施方式中，
EDFA集合中的每个EDFA对应有一路光纤，二级CPL集合中的每个二级CPL的输出端口连接有2个EDFA。
可选的，在一些可能的实施方式中，
每个二级CPL输出端口连接的2个EDFA所对应的2路光纤构成一组光纤对。
可选的，在一些可能的实施方式中，
每个二级CPL输出端口连接的其中一个EDFA所对应的一路光纤以及与每个二级CPL相邻的一个二级CPL输出端口连接的其中一个EDFA所对应的一路光纤构成一组光纤对。
需要说明的是，一组光纤对(fiber pair，FP)是指与一个通信传输设备(line transmission equipment，LTE)的接收端口和发送端口相连的两路光纤，这两路光纤组成一路接收、一路发送的通信链路，不同的光纤对之间相互保持隔离。
在本申请实施方式中，提供了两种不同的海底网络设备与光纤对之间的连接方式，提高了本方案的灵活性。
可选的，在一些可能的实施方式中，
一级CPL集合中的每个一级CPL的输入端口连接2个泵浦激光器，每个一级CPL输出的每一路一级泵浦激光包含与每个一级CPL输入端口连接的2个泵浦激光器发射的各50％能量，二级CPL集合中的每个二级CPL输出的每一路二级泵浦激光包含与2个一级CPL输入端口连接的4个泵浦激光器发射的各25％能量，每个二级CPL与2个一级CPL连接。
在本申请实施方式中，每一路EDFA的泵浦激光能量由与其相对应的4支泵浦激光器共同提供，每支泵浦激光器贡献25％的能量，本方案最多可允许其中3支泵浦激光器失效，EDFA模块仍保持一定的放大能力，提高了系统可靠性；并且泵浦激光器数量与EDFA数量相同，泵浦激光器用量少、成本低、总功耗小、总热耗小。
可选的，在一些可能的实施方式中，
一级CPL集合中的每个一级CPL的输入端口连接1个泵浦激光器，每个一级CPL输出的每一路一级泵浦激光包含与每个一级CPL输入端口连接的1个泵浦激光器发射的50％能量，二级CPL集合中的每个二级CPL输出的每一路二级泵浦激光包含与2个一级CPL输入端口连接的2个泵浦激光器发射的各25％能量，每个二级CPL与2个一级CPL连接。
可选的，在一些可能的实施方式中，
一级CPL集合中的每个一级CPL的输入端口连接4个泵浦激光器，每个一级CPL输出的每一路一级泵浦激光包含与每个一级CPL输入端口连接的4个泵浦激光器发射的各50％ 能量，二级CPL集合中的每个二级CPL输出的每一路二级泵浦激光包含与2个一级CPL输入端口连接的8个泵浦激光器发射的各25％能量，每个二级CPL与2个一级CPL连接。
在以上可能实施方式中，还提供了每个一级CPL的输入端口连接1个或4个泵浦激光器的实施方式，提高了本方案的灵活性。
可选的，在一些可能的实施方式中，
泵浦激光器集合、EDFA集合、一级CPL集合及二级CPL集合分别设置于不同平面。
在本申请实施方式中，海底网络设备中不同类型的组件分别设置于不同的平面，使得有更大的空间在不同类型的组件之间进行布线。
可选的，在一些可能的实施方式中，
泵浦激光器集合中的各泵浦激光器、EDFA集合中的各EDFA、一级CPL集合中的各一级CPL及二级CPL集合中的各二级CPL均呈环形放置。
在本申请实施方式中，海底网络设备中的各组件呈环形放置，可以形成完整的闭环，具备结构上的对称性，并且在此基础上支持无限的扩展。
本申请实施例第二方面提供了一种海底网络设备，包括光纤集合、泵浦激光器集合、掺铒光纤放大器EDFA集合、一级光纤耦合器CPL集合、二级CPL集合以及三级CPL集合，其中，一级CPL集合包含N个一级CPL，二级CPL集合包含N个二一级CPL，三级CPL集合包含N个三级CPL，N为大于或等于5的整数，光纤集合用于将泵浦激光器集合、一级CPL集合、二级CPL集合、三级CPL集合以及EDFA集合连接起来，一级CPL集合中的每个一级CPL的输入端口至少连接有一个泵浦激光器，三级CPL集合中的每个三级CPL的输出端口至少连接有一个EDFA，一级CPL集合中的每个一级CPL都与一级CPL集合中的另外2个一级CPL相邻，二级CPL集合中的每个二级CPL都与二级CPL集合中的另外2个二级CPL相邻，三级CPL集合中的每个三级CPL都与三级CPL集合中的另外2个三级CPL相邻，一级CPL集合中的每个一级CPL的输出端口分别连接不同的两个二级CPL，与每个一级CPL的输出端口相连的不同的两个二级CPL之间相隔两个二级CPL，二级CPL集合中的每个二级CPL的输入端口分别连接不同的两个一级CPL，不同的两个一级CPL之间相隔两个一级CPL，二级CPL集合中的每个二级CPL的输出端口分别连接不同的两个三级CPL，不同的两个三级CPL之间相隔一个三级CPL，三级CPL集合中的每个三级CPL的输入端口分别连接不同的两个二级CPL，与每个三级CPL的输入端口相连的不同的两个二级CPL之间相隔一个一级CPL；
泵浦激光器集合中的每个泵浦激光器用于发射泵浦激光，一级CPL集合中的每个一级CPL用于对接收到的泵浦激光进行耦合，并输出两路一级泵浦激光，两路一级泵浦激光分别输出至与每个一级CPL的输出端口相连的不同的两个二级CPL，二级CPL集合中的每个二级CPL用于对接收到的一级泵浦激光进行耦合，并输出两路二级泵浦激光至不同的两个三级CPL，三级CPL集合中的每个三级CPL用于对接收到的二级泵浦激光进行耦合，并输出至少一路三级泵浦激光至至少一个EDFA。
在本申请实施方式中，每一路EDFA的泵浦激光能量由与其相对应的至少4只泵浦激光器共同提供，即使与每一路EDFA相对应的其中一部分泵浦激光器失效，EDFA模块仍保持一定的放大能力，在此基础上，由于每个一级CPL的输入端口连接至少一个泵浦激光器， 每个三级CPL的输出端口连接至少一个EDFA，那么在本方案的海底网络设备中，泵浦激光器的数量并不一定会多于EDFA模块的数量，因此泵浦激光器用量少，降低了海底网络设备的成本、功耗以及热耗。
可选的，在一些可能的实施方式中，
EDFA集合中的每个EDFA对应有一路光纤，三级CPL集合中的每个三级CPL的输出端口连接有2个EDFA。
可选的，在一些可能的实施方式中，
每个三级CPL输出端口连接的2个EDFA所对应的2路光纤构成一组光纤对。
可选的，在一些可能的实施方式中，
每个三级CPL输出端口连接的其中一个EDFA所对应的一路光纤以及与每个三级CPL相邻的一个三级CPL输出端口连接的其中一个EDFA所对应的一路光纤构成一组光纤对。
在本申请实施方式中，提供了两种不同的海底网络设备与光纤对之间的连接方式，提高了本方案的灵活性。
可选的，在一些可能的实施方式中，
一级CPL集合中的每个一级CPL的输入端口连接2个泵浦激光器，每个一级CPL输出的每一路一级泵浦激光包含与每个一级CPL输入端口连接的2个泵浦激光器发射的各50％能量，二级CPL集合中的每个二级CPL输出的每一路二级泵浦激光包含与2个一级CPL输入端口连接的4个泵浦激光器发射的各25％能量，每个二级CPL与2个一级CPL连接，三级CPL集合中的每个三级CPL输出的每一路三级泵浦激光包含与4个一级CPL输入端口连接的8个泵浦激光器发射的各12.5％的能量，每个三级CPL与2个二级CPL连接，2个二级CPL与4个一级CPL连接。
在本申请实施方式中，每一路EDFA的泵浦激光能量由与其相对应的8支泵浦激光器共同提供，每支泵浦激光器贡献12.5％的能量，本方案最多可允许其中7支泵浦激光器失效，EDFA模块仍保持一定的放大能力，提高了系统可靠性；并且泵浦激光器数量与EDFA数量相同，泵浦激光器用量少、成本低、总功耗小、总热耗小。
可选的，在一些可能的实施方式中，
一级CPL集合中的每个一级CPL的输入端口连接1个泵浦激光器，每个一级CPL输出的每一路一级泵浦激光包含与每个一级CPL输入端口连接的1个泵浦激光器发射的各50％能量，二级CPL集合中的每个二级CPL输出的每一路二级泵浦激光包含与2个一级CPL输入端口连接的2个泵浦激光器发射的各25％能量，每个二级CPL与2个一级CPL连接，三级CPL集合中的每个三级CPL输出的每一路三级泵浦激光包含与4个一级CPL输入端口连接的4个泵浦激光器发射的各12.5％的能量，每个三级CPL与2个二级CPL连接，2个二级CPL与4个一级CPL连接。
可选的，在一些可能的实施方式中，
一级CPL集合中的每个一级CPL的输入端口连接4个泵浦激光器，每个一级CPL输出的每一路一级泵浦激光包含与每个一级CPL输入端口连接的4个泵浦激光器发射的各50％能量，二级CPL集合中的每个二级CPL输出的每一路二级泵浦激光包含与2个一级CPL输 入端口连接的8个泵浦激光器发射的各25％能量，每个二级CPL与2个一级CPL连接，三级CPL集合中的每个三级CPL输出的每一路三级泵浦激光包含与4个一级CPL输入端口连接的16个泵浦激光器发射的各12.5％的能量，每个三级CPL与2个二级CPL连接，2个二级CPL与4个一级CPL连接。
在以上可能实施方式中，还提供了每个一级CPL的输入端口连接1个或4个泵浦激光器的实施方式，提高了本方案的灵活性。
可选的，在一些可能的实施方式中，
泵浦激光器集合、EDFA集合、一级CPL集合、二级CPL集合以及三级CPL集合分别设置于不同平面。
在本申请实施方式中，海底网络设备中不同类型的组件分别设置于不同的平面，使得有更大的空间在不同类型的组件之间进行布线。
可选的，在一些可能的实施方式中，
泵浦激光器集合中的各泵浦激光器、EDFA集合中的各EDFA、一级CPL集合中的各一级CPL、二级CPL集合中的各二级CPL以及三级CPL集合中的各三级CPL均呈环形放置。
在本申请实施方式中，海底网络设备中的各组件呈环形放置，可以形成完整的闭环，具备结构上的对称性，并且在此基础上支持无限的扩展。
本申请实施例第三方面提供了一种海底网络设备，包括泵浦激光器集合、掺铒光纤放大器EDFA集合、一级光纤耦合器CPL集合及二级CPL集合，其中所述一级CPL集合至少包括三个一级CPL，所述二级CPL集合至少包括三个二级CPL，所述一级CPL集合中的每个一级CPL的输入端口至少连接有一个泵浦激光器，所述二级CPL集合中的每个二级CPL的输出端口连接所述EDFA集合中的至少一个EDFA，所述一级CPL集合中至少有一个一级CPL的输出端口分别连接不同的两个二级CPL，所述不同的两个二级CPL之间相隔一个二级CPL，所述二级CPL集合中至少有一个二级CPL的输入端口分别连接不同的两个一级CPL，所述不同的两个一级CPL之间相隔一个一级CPL；
所述泵浦激光器集合中的每个泵浦激光器用于发射泵浦激光，所述一级CPL集合中至少有一个一级CPL用于对接收到的泵浦激光进行耦合，并输出两路一级泵浦激光，所述两路一级泵浦激光分别输出至所述不同的两个二级CPL，所述二级CPL集合中至少有一个二级CPL用于对接收到的一级泵浦激光进行耦合，并输出至少一路二级泵浦激光至所述至少一个EDFA。
在本申请实施方式中，每一路EDFA的泵浦激光能量都有至少2只泵浦激光器共同提供，即使与每一路EDFA相对应的其中一部分泵浦激光器失效，EDFA模块仍保持一定的放大能力，在此基础上，由于每个一级CPL的输入端口连接至少一个泵浦激光器，每个二级CPL的输出端口连接至少一个EDFA泵浦激光器的数量不需要维持在EDFA模块数量的2倍，可以降低海底网络设备的成本、功耗以及热耗。
可选地，在一些可能的实施方式中，
EDFA集合中的每个EDFA对应有一路光纤，二级CPL集合中的每个二级CPL的输出端口连接有2个EDFA。
可选的，在一些可能的实施方式中，
每个二级CPL输出端口连接的2个EDFA所对应的2路光纤构成一组光纤对。
可选的，在一些可能的实施方式中，
每个二级CPL输出端口连接的其中一个EDFA所对应的一路光纤以及与每个二级CPL相邻的一个二级CPL输出端口连接的其中一个EDFA所对应的一路光纤构成一组光纤对。
在本申请实施方式中，提供了两种不同的海底网络设备与光纤对之间的连接方式，提高了本方案的灵活性。
附图说明
图1为现有技术中一种单光纤对4×2架构的泵浦冗余方案示意图；
图2为现有技术中一种单根光纤2×1架构的泵浦冗余方案示意图；
图3为现有技术中一种单光纤对2×2架构的泵浦冗余方案示意图；
图4为现有技术中另一种单光纤对2×2架构的泵浦冗余方案示意图；
图5为现有技术中另一种单光纤对2×2架构的泵浦冗余方案示意图；
图6为本申请实施例中一种海底网络设备在5纤对场景中的立体结构图；
图7为本申请实施例中一种海底网络设备在5纤对场景中的平面展开图；
图8为本申请实施例中一种海底网络设备内部器件的连接示意图；
图9为本申请实施例中一种海底网络设备在5纤对场景中的侧面解剖图；
图10为本申请实施例中一种海底网络设备在3纤对场景中的平面展开图；
图11为本申请实施例中一种海底网络设备在8纤对场景中的平面展开图；
图12为本申请实施例中另一种海底网络设备在5纤对场景中的平面展开图；
图13为本申请实施例中另一种海底网络设备在5纤对场景中的侧面解剖图；
图14为本申请实施例中另一种海底网络设备在5纤对场景中的侧面解剖图；
图15为本申请实施例中一种海底网络设备在10纤对场景中的侧面解剖图；
图16为本申请实施例中光纤对的示意图。
具体实施方式
本申请实施例提供了一种海底网络设备，可以降低了海底网络设备的成本、功耗以及热耗。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本申请可以应用于海底光纤光缆通信领域，本申请中的海底网络设备具体可以是海底 光中继器，长距离海底光纤光缆通信系统(通常500km以上链路)需要配置海底光中继器以实现对传输光信号的放大。海底光中继器长期工作在水下，需要保证25年的设计寿命。由于海缆系统水下设备的维修需要动用施工船，使得水下维修具有难度大、周期长、费用高等特点，因此水下光中继器需要具备高可靠性，以降低故障和维修风险。
本申请中的海底光中继器是基于EDFA技术，EDFA的增益介质是掺铒光纤，EDFA正常工作时需要泵浦激光器为掺铒光纤提供激励能源，泵浦激光器发出的泵浦激光经波分复用器与信号光耦合进同一根光纤并注入到掺铒光纤中，掺铒光纤吸收泵浦激光后铒离子跃迁到激发态，光信号光子经过时发生受激辐射，产生与信号光光子同频率、同方向、同偏振的光子以实现信号光放大。
泵浦激光器属于有源光器件，其失效率相对其他无源光器件较高，泵浦激光器失效会导致光中继器无法正常工作，因而往往需要进行泵浦冗余设计以提高光中继器的整体可靠性。业界现有泵浦冗余方案主要为单根纤2×1架构、单光纤对2×2架构和单光纤对4×2架构。
如图2所示为单根纤2×1架构(2支泵浦激光器×1路光纤)的泵浦冗余设计方案，两支泵浦激光器输出的泵浦激光经偏振合束器耦合后，输入到一路光纤上的掺铒光纤，即两支泵浦激光器共同支持一路EDFA模块。当其中一支泵浦激光器失效时，仍有一半的泵浦功率输入掺铒光纤，使EDFA模块仍保持一定的放大能力。
该方案的系统可靠性低，当支持同一根纤的两支泵浦激光器同时失效时，此根纤上的EDFA模块无法工作，将导致系统业务中断。另外，泵浦激光器数量是EDFA模块数量的2倍，成本高，功耗及热耗大。
如图3所示为单光纤对2×2架构(2支泵浦激光器×2路光纤)的一种泵浦冗余设计方案，两支泵浦激光器共同支持一对(两路)EDFA模块。两支泵浦激光器输出的两路泵浦激光经由光纤耦合器耦合后其光功率重新分配，使每支泵浦激光器分别为两路掺铒光纤各提供一半的泵浦能量。当其中一支泵浦激光器失效时，另一支泵浦激光器仍然能为两路掺铒光纤提供能量，使两路EDFA模块仍保持一定的放大能力。
如图4所示为单光纤对2×2架构(2支泵浦激光器×2路光纤)的另一种泵浦冗余设计方案，每支泵浦激光器输出的泵浦激光被光纤分路器分为两路分泵浦激光。再通过光纤耦合器将一支泵浦激光器的分泵浦激光与另一支泵浦激光器的分泵浦激光耦合在一起，为一路掺铒光纤提供泵浦能量。当其中一支泵浦激光器失效时，另一支泵浦激光器仍然能为两路掺铒光纤提供能量，使两路EDFA模块仍保持一定的放大能力。
如图5所示为单光纤对2×2架构(2支泵浦激光器×2路光纤)的另一种泵浦冗余设计方案，第一泵浦激光分为第一分泵浦激光和第二分泵浦激光，分别输入到两路光纤中的掺铒光纤。第二泵浦激光分为第三分泵浦激光和第四分泵浦激光，分别输入到两路光纤中的掺铒光纤。当其中一支泵浦激光器失效时，另一支泵浦激光器仍然能为两路掺铒光纤提供能量，使两路EDFA模块仍保持一定的放大能力。
该方案的系统可靠性低，最多只允许一支泵浦激光器失效，当支持同一纤对的两支泵浦激光器同时失效时，此纤对上的两路EDFA模块均无法工作，将导致系统业务中断。
另外，还有如图1所示单光纤对4×2架构(4支泵浦激光器×2路光纤)的泵浦冗余设计方案，这种泵浦冗余设计方案中，泵浦激光器数量是EDFA模块数量的2倍，由于每一组光纤对应2个EDFA模块，因此每增加一组光纤对，泵浦激光器的数量需要成倍的增加，导致成本较高。
综合以上几种泵浦冗余设计方案，都无法实现在多光纤对的应用场景下任意纤对的泵浦共享，为此本申请提供了一种新型的泵浦冗余设计方案，可实现多光纤对的应用场景下任意纤对之间的泵浦共享；而且，在不增加泵浦激光器数量的前提下，每路EDFA也可以同时有4支泵浦激光器的泵浦光输入，可以实现4×4泵浦冗余。
请参阅图6，图6为本申请实施例提供的海底光中继器的立体结构图，其中，海底光中继器包括以下器件：光纤、泵浦激光器、EDFA、一级CPL及二级CPL。
由于本申请主要应用于多光纤对的场景下，为区别于现有技术方案，一般至少是3光纤对(六路光纤)的应用场景，因此，上述泵浦激光器、一级CPL及二级CPL的数量不少于3只，上述EDFA的数量需要对应光纤对的数量，即每一路光纤需要对应有一只EDFA，故EDFA的数量不少于6只，需要说明的是，上述一级CPL及二级CPL可以是相同结构组成的CPL，本方案只是从功能上进行了区分，具体的，本申请中的一级CPL及二级CPL可以是包括2个输入端口和2个输出端口的端口损耗为3dB的CPL。
其中，作为示例，可以参阅图16，一组光纤对(fiber pair，FP)是指与一个通信传输设备(line transmission equipment，LTE)的接收端口和发送端口相连的两路光纤，这两路光纤组成一路接收、一路发送的通信链路。不同的光纤对之间相互保持隔离，即不同的光纤对之间没有物理连接。
下面对上述各器件的位置关系及功能进行进一步的描述：
为便于理解，请参阅图7，图7为上述图6的平面展开图，泵浦激光器、EDFA、一级CPL及二级CPL分别设置于不同平面；并且各泵浦激光器、各EDFA、各一级CPL及各二级CPL均呈环形放置，形成闭合的结构；每个一级CPL的输入端口都至少连接有一个泵浦激光器(例如图6或图7中所示每个一级CPL的输入端口可以连接两个泵浦激光器)，每个二级CPL的输出端口连接有两个EDFA；一级CPL集合中的每个一级CPL都与一级CPL集合中的另外2个一级CPL相邻，二级CPL集合中的每个二级CPL都与二级CPL集合中的另外2个二级CPL相邻；一级CPL的输出端口与二级CPL的输入端口之间通过光纤进行交叉连接，每个一级CPL所连接的两个不同的二级CPL之间相隔着一个二级CPL，每个二级CPL所连接的两个不同的一级CPL之间相隔着一个一级CPL，另外，每个一级CPL都有一个与之呈对称放置的二级CPL，即该一级CPL与该二级CPL可以在同一轴上，并且该轴分别垂直于各一级CPL及各二级CPL所在的平面。
泵浦激光器用于发射泵浦激光；一级CPL用于对接收到的泵浦激光进行耦合，并输出两路一级泵浦激光，其输出的两路一级泵浦激光分别输出至不同的两个二级CPL，由于一级CPL的输出端口与二级CPL的输入端口之间通过光纤进行交叉连接，因此这两个二级CPL之间相隔着另一个二级CPL；二级CPL用于对接收到的一级泵浦激光进行耦合，并输出两路二级泵浦激光至不同的两个EDFA。
需要说明的是，上述各器件之间都是通过光纤进行连接的。
需要说明的是，EDFA包含输入端口、输出端口以及泵浦功率输入口，其中，信号光通过光纤从EDFA的输入端口输入，二级CPL输出的二级泵浦激光从泵浦功率输入口输入EDFA，经EDFA处理后的光信号再通过该光纤从EDFA的输出端口输出。
下面根据本申请所描述的方案，任意取3只一级CPL及与之呈对称放置的3只二级CPL来进一步描述一级CPL与二级CPL之间的连接关系。
请参阅图8，任意的三只一级CPL分别为第一一级CPL、第二一级CPL及第三一级CPL，与之呈对称放置的三只二级CPL分别为第一二级CPL、第二二级CPL及第三二级CPL，其中，第二一级CPL分别与第一一级CPL及第三一级CPL相邻，第二二级CPL分别与第一二级CPL及第三二级CPL相邻；第一一级CPL的输出端口连接第二二级CPL的输入端口，第二一级CPL的输出端口连接第一二级CPL的输入端口，第二一级CPL的输出端口连接第三二级CPL的输入端口，第三一级CPL的输出端口连接第二二级CPL的输入端口；第一二级CPL的输出端口连接第一EDFA的泵浦功率输入口，第二二级CPL的输出端口连接第二EDFA的泵浦功率输入口，第二二级CPL的输出端口连接第三EDFA的泵浦功率输入口，第三二级CPL的输出端口连接第四EDFA的泵浦功率输入口。
需要说明的是，本申请实施例中的海底光中继器并非一定是图5中所示的圆柱体结构，也可以是其他的外部结构来包裹上述各内部器件，例如，也可以是长方体结构，具体此处不做限定。
可以理解的是，由于实际应用中，一级CPL及二级CPL的数量一般均不少于3只，但并未做严格的限定，因此图8所示的实施例只是任意选取了三组对应的一级CPL及二级CPL并对其之间的连接关系进行了描述，并不是本申请所提供的海底光中继器的完整结构，下面将结合不同数量的多光纤对场景对本申请实施例所提供的海底光中继器进行进一步的描述：
请参阅图9，图9为上述图6的侧面解剖图，对应的是本申请实施例中海底光中继器在5纤对应用场景中的结构，包括：10只泵浦激光器(P01至P10)、5只一级CPL(CPL1-1至CPL1-5)、5只二级CPL(CPL2-1至CPL2-5)以及10只EDFA模块(A01至A10)；
每2只泵浦激光器为一组，每个一级CPL的输入端口连接有一组泵浦激光器，具体地，CPL1-1的输入端口连接有P01及P02，CPL1-2的输入端口连接有P03及P04，CPL1-3的输入端口连接有P05及P06，CPL1-4的输入端口连接有P07及P08，CPL1-5的输入端口连接有P09及P10；
一级CPL与二级CPL之间的连接方式具体为，CPL1-1的输出端口分别连接至CPL2-2的输入端口及CPL2-5的输入端口，CPL1-2的输出端口分别连接至CPL2-1的输入端口及CPL2-3的输入端口，CPL1-3的输出端口分别连接至CPL2-2的输入端口及CPL2-4的输入端口，CPL1-4的输出端口分别连接至CPL2-3的输入端口及CPL2-5的输入端口，CPL1-5的输出端口分别连接至CPL2-1的输入端口及CPL2-4的输入端口；
每个二级CPL的输出端口连接有2只EDFA，具体地，CPL2-1的输出端口连接有A01及A10，CPL2-2的输出端口连接有A02及A03，CPL2-3的输出端口连接有A04及A05，CPL2-4 的输出端口连接有A06及A07，CPL2-5的输出端口连接有A08及A09；
需要说明的是，本申请实施例中，每个EDFA对应有一路光纤，该光纤连接有EDFA的输入端口及输出端口，不同的2个二级CPL连接2个EDFA所对应的两路光纤构成一组光纤对，具体地，A01及A02所对应的光纤构成光纤对FP1，A03及A04所对应的光纤构成光纤对FP2，A05及A06所对应的光纤构成光纤对FP3，A07及A08所对应的光纤构成光纤对FP4，A09及A10所对应的光纤构成光纤对FP5。
下面结合上述各器件的功能来进一步的描述：
每一组泵浦激光器发出的两路泵浦激光通过一级CPL进行耦合，之后一级CPL输出两路一级泵浦激光，每一路一级泵浦激光包含这一组(2只)泵浦激光器各50％的能量，例如，P01、P02的泵浦光输入到CPL1-1，再由CPL1-1分别输出P01和P02各50％能量到CPL2-2和CPL2-5，即CPL1-1接收到P01的100％能量以及P02的100％能量，CPL2-2接收到P01的50％能量以及P02的50％能量，CPL2-5也接收到P01的50％能量以及P02的50％能量；
来自不同2只一级CPL输出的一级泵浦激光通过二级CPL的耦合，由二级CPL输出2路二级泵浦激光，每一路二级泵浦激光为1只EDFA提供能量，每一路二级泵浦激光包含4只泵浦激光器各25％能量，例如，CPL2-1接收到CPL1-2及CPL1-5输出的2路一级泵浦激光，即CPL2-1接收到P03、P04、P09及P10各50％的能量，CPL2-1分别输出2路二级泵浦激光至A01和A10，每一路二级泵浦激光包括P03、P04、P09及P10各25％的能量。
需要说明的是，本方案可以通过检测EDFA的输出功率变化，来判断出哪一组泵浦激光器出现异常。例如：A01、A10和A04、A05出现相同的功率降低，通过反向回推的方式可以看出共同为A01、A10、A04及A05提供能量的一组泵浦激光器分别是P03及P04，由此就可以判断出与CPL1-2连接的泵浦激光器P03或P04出现了异常。
需要说明的是，本方案中各一级CPL输出的两路一级泵浦激光以及各二级CPL输出的两路二级泵浦激光均是按照1:1的比例进行耦合的，除此之外，在实际应用中也可以根据不同需要对输出的两路泵浦激光的比例进行调整，具体此处不做限定，例如，P01、P02的泵浦光输入到CPL1-1，再由CPL1-1输出P01的30％能量和P02的70％能量到CPL2-2，CPL1-1输出P01的70％能量和P02的30％能量到CPL2-5。
本申请实施例中，每一路EDFA的泵浦激光能量由与其相对应的四支泵浦激光器共同提供，每支泵浦激光器贡献25％的能量，本方案最多可允许其中三支泵浦激光器失效，EDFA模块仍保持一定的放大能力，提高了系统可靠性；并且泵浦激光器数量与EDFA数量相同，泵浦激光器用量少、成本低、总功耗小、总热耗小；另外，可以通过检测EDFA的输出功率变化，来判断出哪一组泵浦激光器出现异常，为系统的维护提供了有效的帮助。
下面请参阅图10，图10对应的是本申请实施例中海底光中继器在3光纤对应用场景中的结构，包括：6只泵浦激光器(P01至P06)、3只一级CPL(CPL1-1至CPL1-3)、3只二级CPL(CPL2-1至CPL2-3)以及6只EDFA模块(A01至A06)；
每2只泵浦激光器为一组，每个一级CPL的输入端口连接有一组泵浦激光器，具体地，CPL1-1的输入端口连接有P01及P02，CPL1-2的输入端口连接有P03及P04，CPL1-3的输入端口连接有P05及P06；
一级CPL与二级CPL之间的连接方式具体为，CPL1-1的输出端口分别连接至CPL2-2的输入端口及CPL2-3的输入端口，CPL1-2的输出端口分别连接至CPL2-1的输入端口及CPL2-3的输入端口，CPL1-3的输出端口分别连接至CPL2-1的输入端口及CPL2-2的输入端口；
每个二级CPL的输出端口连接有2只EDFA，具体地，CPL2-1的输出端口连接有A01及A06，CPL2-2的输出端口连接有A02及A03，CPL2-3的输出端口连接有A04及A05；
需要说明的是，本申请实施例中，每个EDFA对应有一路光纤，该光纤连接有EDFA的输入端口及输出端口，不同的2个二级CPL连接2个EDFA所对应的两路光纤构成一个光纤对，具体地，A01及A02所对应的光纤构成光纤对FP1，A03及A04所对应的光纤构成光纤对FP2，A05及A06所对应的光纤构成光纤对FP3。
下面结合上述各器件的功能来进一步的描述：
每一组泵浦激光器发出的两路泵浦激光通过一级CPL进行耦合，之后一级CPL输出两路一级泵浦激光，每一路一级泵浦激光包含这一组(2只)泵浦激光器各50％的能量，例如，P01、P02的泵浦光输入到CPL1-1，再由CPL1-1分别输出P01和P02各50％能量到CPL2-2和CPL2-3，即CPL1-1接收到P01的100％能量以及P02的100％能量，CPL2-2接收到P01的50％能量以及P02的50％能量，CPL2-3也接收到P01的50％能量以及P02的50％能量；
来自不同2只一级CPL输出的一级泵浦激光通过二级CPL的耦合，由二级CPL输出2路二级泵浦激光，每一路二级泵浦激光为1只EDFA提供能量，每一路二级泵浦激光包含4只泵浦激光器各25％能量，例如，CPL2-1接收到CPL1-2及CPL1-3输出的2路一级泵浦激光，即CPL2-1接收到P03、P04、P05及P06各50％的能量，CPL2-1分别输出2路二级泵浦激光至A01和A06，每一路二级泵浦激光包括P03、P04、P05及P06各25％的能量。
需要说明的是，本方案可以通过检测EDFA的输出功率变化，来判断出哪一组泵浦激光器出现异常。例如：A01、A06和A04、A05出现相同的功率降低，通过反向回推的方式可以看出共同为A01、A06、A04及A05提供能量的一组泵浦激光器分别是P03及P04，由此就可以判断出与CPL1-2连接的泵浦激光器P03或P04出现了异常。
需要说明的是，本方案中各一级CPL输出的两路一级泵浦激光以及各二级CPL输出的两路二级泵浦激光均是按照1:1的比例进行耦合的，除此之外，在实际应用中也可以根据不同需要对输出的两路泵浦激光的比例进行调整，具体此处不做限定，例如，P01、P02的泵浦光输入到CPL1-1，再由CPL1-1输出P01的30％能量和P02的70％能量到CPL2-2，CPL1-1输出P01的70％能量和P02的30％能量到CPL2-5。
下面请参阅图11，图11对应的是本申请实施例中海底光中继器在8光纤对应用场景中的结构，包括：16只泵浦激光器(P01至P16)、8只一级CPL(CPL1-1至CPL1-8)、8只二级CPL(CPL2-1至CPL2-8)以及16只EDFA模块(A01至A16)；
每2只泵浦激光器为一组，每个一级CPL的输入端口连接有一组泵浦激光器，具体地，CPL1-1的输入端口连接有P01及P02，CPL1-2的输入端口连接有P03及P04，CPL1-3的输入端口连接有P05及P06，CPL1-4的输入端口连接有P07及P08，CPL1-5的输入端口连接有P09及P10，CPL1-6的输入端口连接有P11及P12，CPL1-7的输入端口连接有P13及P14， CPL1-8的输入端口连接有P15及P16；
一级CPL与二级CPL之间的连接方式具体为，CPL1-1的输出端口分别连接至CPL2-2的输入端口及CPL2-8的输入端口，CPL1-2的输出端口分别连接至CPL2-1的输入端口及CPL2-3的输入端口，CPL1-3的输出端口分别连接至CPL2-2的输入端口及CPL2-4的输入端口，CPL1-4的输出端口分别连接至CPL2-3的输入端口及CPL2-5的输入端口，CPL1-5的输出端口分别连接至CPL2-4的输入端口及CPL2-6的输入端口，CPL1-6的输出端口分别连接至CPL2-5的输入端口及CPL2-7的输入端口，CPL1-7的输出端口分别连接至CPL2-6的输入端口及CPL2-8的输入端口，CPL1-8的输出端口分别连接至CPL2-7的输入端口及CPL2-1的输入端口；
每个二级CPL的输出端口连接有2只EDFA，具体地，CPL2-1的输出端口连接有A01及A16，CPL2-2的输出端口连接有A02及A03，CPL2-3的输出端口连接有A04及A05，CPL2-4的输出端口连接有A06及A07，CPL2-5的输出端口连接有A08及A09，CPL2-6的输出端口连接有A10及A11，CPL2-7的输出端口连接有A12及A13，CPL2-8的输出端口连接有A14及A15；
需要说明的是，本申请实施例中，每个EDFA对应有一路光纤，该光纤连接有EDFA的输入端口及输出端口，不同的2个二级CPL连接2个EDFA所对应的两路光纤构成一个光纤对，具体地，A01及A02所对应的光纤构成光纤对FP1，A03及A04所对应的光纤构成光纤对FP2，A05及A06所对应的光纤构成光纤对FP3，A07及A08所对应的光纤构成光纤对FP4，A09及A10所对应的光纤构成光纤对FP5，A11及A12所对应的光纤构成光纤对FP6，A13及A14所对应的光纤构成光纤对FP7，A15及A16所对应的光纤构成光纤对FP8。
下面结合上述各器件的功能来进一步的描述：
每一组泵浦激光器发出的两路泵浦激光通过一级CPL进行耦合，之后一级CPL输出两路一级泵浦激光，每一路一级泵浦激光包含这一组(2只)泵浦激光器各50％的能量，例如，P01、P02的泵浦光输入到CPL1-1，再由CPL1-1分别输出P01和P02各50％能量到CPL2-2和CPL2-8，即CPL1-1接收到P01的100％能量以及P02的100％能量，CPL2-2接收到P01的50％能量以及P02的50％能量，CPL2-8也接收到P01的50％能量以及P02的50％能量；
来自不同2只一级CPL输出的一级泵浦激光通过二级CPL的耦合，由二级CPL输出2路二级泵浦激光，每一路二级泵浦激光为1只EDFA提供能量，每一路二级泵浦激光包含4只泵浦激光器各25％能量，例如，CPL2-1接收到CPL1-2及CPL1-8输出的2路一级泵浦激光，即CPL2-1接收到P03、P04、P15及P16各50％的能量，CPL2-1分别输出2路二级泵浦激光至A01和A16，每一路二级泵浦激光包括P03、P04、P15及P16各25％的能量。
需要说明的是，本方案可以通过检测EDFA的输出功率变化，来判断出哪一组泵浦激光器出现异常。例如：A01、A16和A04、A05出现相同的功率降低，通过反向回推的方式可以看出共同为A01、A16、A04及A05提供能量的一组泵浦激光器分别是P03及P04，由此就可以判断出与CPL1-2连接的泵浦激光器P03或P04出现了异常。
需要说明的是，本方案中各一级CPL输出的两路一级泵浦激光以及各二级CPL输出的两路二级泵浦激光均是按照1:1的比例进行耦合的，除此之外，在实际应用中也可以根据 不同需要对输出的两路泵浦激光的比例进行调整，具体此处不做限定，例如，P01、P02的泵浦光输入到CPL1-1，再由CPL1-1输出P01的30％能量和P02的70％能量到CPL2-2，CPL1-1输出P01的70％能量和P02的30％能量到CPL2-5。
上述图9至图11所示的实施例描述的都是不同的2个二级CPL连接2个EDFA所对应的两路光纤构成一个光纤对的场景，除此之外，本方案也可以是同一个二级CPL连接2个EDFA所对应的两路光纤构成一个光纤对，下面仍以5光纤对应用场景为例对这种海底光中继器的结构进行介绍：
请参阅图12，本申请实施例中的海底光中继器包括：10只泵浦激光器(P01至P10)、5只一级CPL(CPL1-1至CPL1-5)、5只二级CPL(CPL2-1至CPL2-5)以及10只EDFA模块(A01至A10)；
每2只泵浦激光器为一组，每个一级CPL的输入端口连接有一组泵浦激光器，具体地，CPL1-1的输入端口连接有P01及P02，CPL1-2的输入端口连接有P03及P04，CPL1-3的输入端口连接有P05及P06，CPL1-4的输入端口连接有P07及P08，CPL1-5的输入端口连接有P09及P10；
一级CPL与二级CPL之间的连接方式具体为，CPL1-1的输出端口分别连接至CPL2-2的输入端口及CPL2-5的输入端口，CPL1-2的输出端口分别连接至CPL2-1的输入端口及CPL2-3的输入端口，CPL1-3的输出端口分别连接至CPL2-2的输入端口及CPL2-4的输入端口，CPL1-4的输出端口分别连接至CPL2-3的输入端口及CPL2-5的输入端口，CPL1-5的输出端口分别连接至CPL2-1的输入端口及CPL2-4的输入端口；
每个二级CPL的输出端口连接有2只EDFA，具体地，CPL2-1的输出端口连接有A01及A02，CPL2-2的输出端口连接有A03及A04，CPL2-3的输出端口连接有A05及A06，CPL2-4的输出端口连接有A07及A08，CPL2-5的输出端口连接有A09及A10；其中，A01及A02所对应的光纤构成光纤对FP1，A03及A04所对应的光纤构成光纤对FP2，A05及A06所对应的光纤构成光纤对FP3，A07及A08所对应的光纤构成光纤对FP4，A09及A10所对应的光纤构成光纤对FP5。
由此可以看出，每个二级CPL连接的两个EDFA所对应的光纤构成一个光纤对，区别于图9至图11所示实施例的方案。
上述实施例描述的都是每个一级CPL的输入端口连接有两只泵浦激光器的场景，除此之外，每个一级CPL的输入端口也可以连接其他数量的泵浦激光器，下面进行详细的描述：
请参阅图13，图13也是本申请实施例中海底光中继器在5纤对应用场景中的结构，包括：5只泵浦激光器(P01至P05)、5只一级CPL(CPL1-1至CPL1-5)、5只二级CPL(CPL2-1至CPL2-5)以及10只EDFA模块(A01至A10)；
本实施例与图9所示的实施例区别在于，每个一级CPL的输入端口连接有一只泵浦激光器，具体地，CPL1-1的输入端口连接有P01，CPL1-2的输入端口连接有P02，CPL1-3的输入端口连接有P03，CPL1-4的输入端口连接有P04，CPL1-5的输入端口连接有P05；
关于本实施例其他部分结构的描述与图9所示实施例的描述类似，具体此处不再赘述。
请参阅图14，图14也是本申请实施例中海底光中继器在5纤对应用场景中的结构， 包括：20只泵浦激光器(P01至P20)、5只一级CPL(CPL1-1至CPL1-5)、5只二级CPL(CPL2-1至CPL2-5)、10只EDFA模块(A01至A10)以及10只偏振光合束器(optical polarization beam combiner，PBC)；
每个一级CPL可以接收4只泵浦激光器提供的能量，具体地，每2只泵浦激光器为一组，每一组的泵浦激光器的输出端口连接至1只PBC的输入端口，每个一级CPL的输入端口连接有2只不同的PBC，其中，PBC可以将两束偏振方向正交的偏振光合成一束，例如，PBC可以将P01及P02两只泵浦激光器输出的泵浦光合成一束，并输出至CPL1-1，而另一只PBC可以将P03及P04两只泵浦激光器输出的泵浦光合成一束，并同样输出至CPL1-1。
关于本实施例其他部分结构的描述与图9所示实施例的描述类似，具体此处不再赘述。
需要说明的是，上述实施例描述的海底光中继器中的CPL是划分为一级CPL和二级CPL，除此之外，本方案还可以在此基础上增加三级CPL，下面进行详细的描述：
请参阅图15，图15是本申请实施例中海底光中继器在10光纤对应用场景中的结构，包括：20只泵浦激光器(P01至P20)、10只一级CPL(CPL1-1至CPL1-10)、10只二级CPL(CPL2-1至CPL2-10)、10只三级CPL(CPL3-1至CPL3-10)以及20只EDFA模块(A01至A20)；
其中，泵浦激光器、EDFA、一级CPL、二级CPL及三级CPL分别设置于不同平面；并且各泵浦激光器、各EDFA、各一级CPL、各二级CPL及各三级CPL均呈环形放置，形成闭合的结构；每个一级CPL的输入端口都至少连接有一个泵浦激光器(例如图15中所示每个一级CPL的输入端口可以连接两个泵浦激光器)，每个三级CPL的输出端口连接有两个EDFA；一级CPL集合中的每个一级CPL都与所述一级CPL集合中的另外2个一级CPL相邻，二级CPL集合中的每个二级CPL都与二级CPL集合中的另外2个二级CPL相邻，三级CPL集合中的每个三级CPL都与三级CPL集合中的另外2个三级CPL相邻，一级CPL的输出端口与二级CPL的输入端口之间通过光纤进行交叉连接，每个一级CPL所连接的两个二级CPL之间相隔着另外2个二级CPL，例如，如图15所示，CPL1-1的输出端口连接有CPL2-2及CPL2-9，而CPL2-2和CPL2-9之间相隔着CPL2-1和CPL2-10；二级CPL的输出端口与三级CPL的输入端口之间同样通过光纤进行交叉连接，每个二级CPL所连接的两个三级CPL之间相隔着另一个三级CPL，例如，如图15所示，CPL2-1的输出端口连接有CPL3-2和CPL3-10，而CPL3-2和CPL3-10之间相隔一个CPL3-1。
泵浦激光器用于发射泵浦激光；一级CPL用于对接收到的泵浦激光进行耦合，并输出两路一级泵浦激光，其输出的两路一级泵浦激光分别输出至不同的两个二级CPL；二级CPL用于对接收到的一级泵浦激光进行耦合，并输出两路二级泵浦激光至不同的两个三级CPL；三级CPL用于对接收到的二级泵浦激光进行耦合，并输出两路三级泵浦激光至不同的两个EDFA。
每2只泵浦激光器为一组，每个一级CPL的输入端口连接有一组泵浦激光器，具体地，CPL1-1的输入端口连接有P01及P02，CPL1-2的输入端口连接有P03及P04，CPL1-3的输入端口连接有P05及P06，CPL1-4的输入端口连接有P07及P08，CPL1-5的输入端口连接有P09及P10，CPL1-6的输入端口连接有P11及P12，CPL1-7的输入端口连接有P13及P14， CPL1-8的输入端口连接有P15及P16，CPL1-9的输入端口连接有P17及P18，CPL1-10的输入端口连接有P19及P20；
一级CPL与二级CPL之间的连接方式具体为，CPL1-1的输出端口分别连接至CPL2-2的输入端口及CPL2-9的输入端口，CPL1-2的输出端口分别连接至CPL2-3的输入端口及CPL2-10的输入端口，CPL1-3的输出端口分别连接至CPL2-1的输入端口及CPL2-4的输入端口，CPL1-4的输出端口分别连接至CPL2-2的输入端口及CPL2-5的输入端口，CPL1-5的输出端口分别连接至CPL2-3的输入端口及CPL2-6的输入端口，CPL1-6的输出端口分别连接至CPL2-4的输入端口及CPL2-7的输入端口，CPL1-7的输出端口分别连接至CPL2-5的输入端口及CPL2-8的输入端口，CPL1-8的输出端口分别连接至CPL2-6的输入端口及CPL2-9的输入端口，CPL1-9的输出端口分别连接至CPL2-7的输入端口及CPL2-10的输入端口，CPL1-10的输出端口分别连接至CPL2-8的输入端口及CPL2-1的输入端口；
二级CPL与三级CPL之间的连接方式具体为，CPL2-1的输出端口分别连接至CPL3-2的输入端口及CPL3-10的输入端口，CPL2-2的输出端口分别连接至CPL3-1的输入端口及CPL3-3的输入端口，CPL2-3的输出端口分别连接至CPL3-2的输入端口及CPL3-4的输入端口，CPL2-4的输出端口分别连接至CPL3-3的输入端口及CPL3-5的输入端口，CPL2-5的输出端口分别连接至CPL3-4的输入端口及CPL3-6的输入端口，CPL2-6的输出端口分别连接至CPL3-5的输入端口及CPL3-7的输入端口，CPL2-7的输出端口分别连接至CPL3-6的输入端口及CPL3-8的输入端口，CPL2-8的输出端口分别连接至CPL3-7的输入端口及CPL3-9的输入端口，CPL2-9的输出端口分别连接至CPL3-8的输入端口及CPL3-10的输入端口，CPL2-10的输出端口分别连接至CPL3-9的输入端口及CPL3-1的输入端口；
每个三级CPL的输出端口连接有2只EDFA，具体地，CPL3-1的输出端口连接有A01及A20，CPL3-2的输出端口连接有A02及A03，CPL3-3的输出端口连接有A04及A05，CPL3-4的输出端口连接有A06及A07，CPL3-5的输出端口连接有A08及A09，CPL3-6的输出端口连接有A10及A11，CPL3-7的输出端口连接有A12及A13，CPL3-8的输出端口连接有A14及A15，CPL3-9的输出端口连接有A16及A17，CPL3-10的输出端口连接有A18及A19；
本申请实施例中，每个EDFA对应有一路光纤，该光纤连接有EDFA的输入端口及输出端口，不同的2个三级CPL连接2个EDFA所对应的两路光纤构成一个光纤对，具体地，A01及A02所对应的光纤构成光纤对FP1，A03及A04所对应的光纤构成光纤对FP2，A05及A06所对应的光纤构成光纤对FP3，A07及A08所对应的光纤构成光纤对FP4，A09及A10所对应的光纤构成光纤对FP5，A11及A12所对应的光纤构成光纤对FP6，A13及A14所对应的光纤构成光纤对FP7，A15及A16所对应的光纤构成光纤对FP8，A17及A18所对应的光纤构成光纤对FP9，A19及A20所对应的光纤构成光纤对FP10。
下面结合上述各器件的功能来进一步的描述：
每一组泵浦激光器发出的两路泵浦激光通过一级CPL进行耦合，之后一级CPL输出两路一级泵浦激光，每一路一级泵浦激光包含这一组(2只)泵浦激光器各50％的能量，例如，P01、P02的泵浦光输入到CPL1-1，再由CPL1-1分别输出P01和P02各50％能量到CPL2-2和CPL2-9，即CPL1-1接收到P01的100％能量以及P02的100％能量，CPL2-2接收到P01的 50％能量以及P02的50％能量，CPL2-9也接收到P01的50％能量以及P02的50％能量；
来自不同2只一级CPL输出的一级泵浦激光通过二级CPL的耦合，由二级CPL输出2路二级泵浦激光，每一路二级泵浦激光包含4只泵浦激光器各25％的能量，例如，CPL2-1接收到CPL1-3及CPL1-10输出的2路一级泵浦激光，即CPL2-1接收到P05、P06、P19及P20各50％的能量，CPL2-1分别输出2路二级泵浦激光至CPL3-2和CPL3-10，每一路二级泵浦激光包括P05、P06、P19及P20各25％的能量；
来自不同2只二级CPL输出的二级泵浦激光通过三级CPL的耦合，由三级CPL输出2路三级泵浦激光，每一路三级泵浦激光包含8只泵浦激光器各12.5％的能量，例如，CPL3-1接收到CPL2-2和CPL2-10输出的2路二级泵浦激光，CPL2-2接收到的是CPL1-1和CPL1-4输出的2路一级泵浦激光，CPL2-10接收到的是CPL1-2和CPL1-9输出的2路一级泵浦激光，CPL1-1连接有P01和P02，CPL1-4连接有P07和P08，CPL1-2连接有P03和P04，CPL1-9连接有P17和P18，因此，CPL3-1输出两个三级泵浦激光至A01和A20，其中每一路三级泵浦激光包含P01、P02、P03、P04、P07、P08、P17及P18这8只泵浦激光器各12.5％的能量。
需要说明的是，在实际应用中也可以根据不同需要对各级CPL输出的两路泵浦激光的比例进行调整，具体此处不做限定，例如，P01、P02的泵浦光输入到CPL1-1，再由CPL1-1输出P01的30％能量和P02的70％能量到CPL2-2，CPL1-1输出P01的70％能量和P02的30％能量到CPL2-9。
需要说明的是，本方案也可以是同一个三级CPL连接2个EDFA所对应的两路光纤构成一个光纤对。
需要说明的是，每个一级CPL的输入端口也可以连接其他数量的泵浦激光器，例如，每个一级CPL的输入端口连接1只或4只泵浦激光器，具体此处不做限定。
本申请实施例中，每一路EDFA的泵浦激光能量由与其相对应的8支泵浦激光器共同提供，每支泵浦激光器贡献12.5％的能量，本方案最多可允许其中7支泵浦激光器失效，EDFA模块仍保持一定的放大能力，提高了系统可靠性；并且泵浦激光器数量与EDFA数量相同，泵浦激光器用量少、成本低、总功耗小、总热耗小；另外，可以通过检测EDFA的输出功率变化，来判断出哪一组泵浦激光器出现异常，为系统的维护提供了有效的帮助。

Claims (22)

  1. 一种海底网络设备，包括光纤集合、泵浦激光器集合、掺铒光纤放大器EDFA集合、一级光纤耦合器CPL集合及二级CPL集合，其中，所述一级CPL集合包含N个一级CPL，所述二级CPL集合包含N个二级CPL，所述N为大于或等于3的整数，所述光纤集合用于将所述泵浦激光器集合、所述一级CPL集合、所述二级CPL集合以及所述EDFA集合连接起来，所述一级CPL集合中的每个一级CPL的输入端口至少连接有一个泵浦激光器，所述二级CPL集合中的每个二级CPL的输出端口至少连接有一个EDFA，所述一级CPL集合中的每个一级CPL都与所述一级CPL集合中的另外2个一级CPL相邻，所述二级CPL集合中的每个二级CPL都与所述二级CPL集合中的另外2个二级CPL相邻，所述一级CPL集合中的每个一级CPL的输出端口分别连接不同的两个二级CPL，所述不同的两个二级CPL之间相隔一个二级CPL，所述二级CPL集合中的每个二级CPL的输入端口分别连接不同的两个一级CPL，所述不同的两个一级CPL之间相隔一个一级CPL；
    所述泵浦激光器集合中的每个泵浦激光器用于发射泵浦激光，所述一级CPL集合中的每个一级CPL用于对接收到的泵浦激光进行耦合，并输出两路一级泵浦激光，所述两路一级泵浦激光分别输出至所述不同的两个二级CPL，所述二级CPL集合中的每个二级CPL用于对接收到的一级泵浦激光进行耦合，并输出至少一路二级泵浦激光至所述至少一个EDFA。
  2. 根据权利要求1所述的海底网络设备，其特征在于，所述EDFA集合中的每个EDFA对应有一路光纤，所述二级CPL集合中的每个二级CPL的输出端口连接有2个EDFA。
  3. 根据权利要求2所述的海底网络设备，其特征在于，所述每个二级CPL输出端口连接的2个EDFA所对应的2路光纤构成一组光纤对。
  4. 根据权利要求2所述的海底网络设备，其特征在于，所述每个二级CPL输出端口连接的其中一个EDFA所对应的一路光纤以及与所述每个二级CPL相邻的一个二级CPL输出端口连接的其中一个EDFA所对应的一路光纤构成一组光纤对。
  5. 根据权利要求1至4中任一项所述的海底网络设备，其特征在于，所述一级CPL集合中的每个一级CPL的输入端口连接2个泵浦激光器，所述每个一级CPL输出的每一路一级泵浦激光包含与所述每个一级CPL输入端口连接的2个泵浦激光器发射的各50％能量，所述二级CPL集合中的每个二级CPL输出的每一路二级泵浦激光包含与2个一级CPL输入端口连接的4个泵浦激光器发射的各25％能量，所述每个二级CPL与所述2个一级CPL连接。
  6. 根据权利要求1至4中任一项所述的海底网络设备，其特征在于，所述一级CPL集合中的每个一级CPL的输入端口连接1个泵浦激光器，所述每个一级CPL输出的每一路一级泵浦激光包含与所述每个一级CPL输入端口连接的1个泵浦激光器发射的50％能量，所述二级CPL集合中的每个二级CPL输出的每一路二级泵浦激光包含与2个一级CPL输入端口连接的2个泵浦激光器发射的各25％能量，所述每个二级CPL与所述2个一级CPL连接。
  7. 根据权利要求1至4中任一项所述的海底网络设备，其特征在于，所述一级CPL集合中的每个一级CPL的输入端口连接4个泵浦激光器，所述每个一级CPL输出的每一路一级泵浦激光包含与所述每个一级CPL输入端口连接的4个泵浦激光器发射的各50％能量， 所述二级CPL集合中的每个二级CPL输出的每一路二级泵浦激光包含与2个一级CPL输入端口连接的8个泵浦激光器发射的各25％能量，所述每个二级CPL与所述2个一级CPL连接。
  8. 根据权利要求1至4中任一项所述的海底网络设备，其特征在于，所述泵浦激光器集合、所述EDFA集合、所述一级CPL集合及所述二级CPL集合分别设置于不同平面。
  9. 根据权利要求1至4中任一项所述的海底网络设备，其特征在于，所述泵浦激光器集合中的各泵浦激光器、所述EDFA集合中的各EDFA、所述一级CPL集合中的各一级CPL及所述二级CPL集合中的各二级CPL均呈环形放置。
  10. 一种海底网络设备，包括光纤集合、泵浦激光器集合、掺铒光纤放大器EDFA集合、一级光纤耦合器CPL集合、二级CPL集合以及三级CPL集合，其中，所述一级CPL集合包含N个一级CPL，所述二级CPL集合包含N个二一级CPL，所述三级CPL集合包含N个三级CPL，所述N为大于或等于5的整数，所述光纤集合用于将所述泵浦激光器集合、所述一级CPL集合、所述二级CPL集合、所述三级CPL集合以及所述EDFA集合连接起来，所述一级CPL集合中的每个一级CPL的输入端口至少连接有一个泵浦激光器，所述三级CPL集合中的每个三级CPL的输出端口至少连接有一个EDFA，所述一级CPL集合中的每个一级CPL都与所述一级CPL集合中的另外2个一级CPL相邻，所述二级CPL集合中的每个二级CPL都与所述二级CPL集合中的另外2个二级CPL相邻，所述三级CPL集合中的每个三级CPL都与所述三级CPL集合中的另外2个三级CPL相邻，所述一级CPL集合中的每个一级CPL的输出端口分别连接不同的两个二级CPL，与每个一级CPL的输出端口相连的不同的两个二级CPL之间相隔两个二级CPL，所述二级CPL集合中的每个二级CPL的输入端口分别连接不同的两个一级CPL，所述不同的两个一级CPL之间相隔两个一级CPL，所述二级CPL集合中的每个二级CPL的输出端口分别连接不同的两个三级CPL，所述不同的两个三级CPL之间相隔一个三级CPL，所述三级CPL集合中的每个三级CPL的输入端口分别连接不同的两个二级CPL，与每个三级CPL的输入端口相连的不同的两个二级CPL之间相隔一个一级CPL；
    所述泵浦激光器集合中的每个泵浦激光器用于发射泵浦激光，所述一级CPL集合中的每个一级CPL用于对接收到的泵浦激光进行耦合，并输出两路一级泵浦激光，所述两路一级泵浦激光分别输出至所述与每个一级CPL的输出端口相连的不同的两个二级CPL，所述二级CPL集合中的每个二级CPL用于对接收到的一级泵浦激光进行耦合，并输出两路二级泵浦激光至所述不同的两个三级CPL，所述三级CPL集合中的每个三级CPL用于对接收到的二级泵浦激光进行耦合，并输出至少一路三级泵浦激光至所述至少一个EDFA。
  11. 根据权利要求10所述的海底网络设备，其特征在于，所述EDFA集合中的每个EDFA对应有一路光纤，所述三级CPL集合中的每个三级CPL的输出端口连接有2个EDFA。
  12. 根据权利要求11所述的海底网络设备，其特征在于，所述每个三级CPL输出端口连接的2个EDFA所对应的2路光纤构成一组光纤对。
  13. 根据权利要求11所述的海底网络设备，其特征在于，所述每个三级CPL输出端口连接的其中一个EDFA所对应的一路光纤以及与所述每个三级CPL相邻的一个三级CPL输出端口连接的其中一个EDFA所对应的一路光纤构成一组光纤对。
  14. 根据权利要求10至13中任一项所述的海底网络设备，其特征在于，所述一级CPL集合中的每个一级CPL的输入端口连接2个泵浦激光器，所述每个一级CPL输出的每一路一级泵浦激光包含与所述每个一级CPL输入端口连接的2个泵浦激光器发射的各50％能量，所述二级CPL集合中的每个二级CPL输出的每一路二级泵浦激光包含与2个一级CPL输入端口连接的4个泵浦激光器发射的各25％能量，所述每个二级CPL与所述2个一级CPL连接，所述三级CPL集合中的每个三级CPL输出的每一路三级泵浦激光包含与4个一级CPL输入端口连接的8个泵浦激光器发射的各12.5％的能量，所述每个三级CPL与2个二级CPL连接，所述2个二级CPL与所述4个一级CPL连接。
  15. 根据权利要求10至13中任一项所述的海底网络设备，其特征在于，所述一级CPL集合中的每个一级CPL的输入端口连接1个泵浦激光器，所述每个一级CPL输出的每一路一级泵浦激光包含与所述每个一级CPL输入端口连接的1个泵浦激光器发射的各50％能量，所述二级CPL集合中的每个二级CPL输出的每一路二级泵浦激光包含与2个一级CPL输入端口连接的2个泵浦激光器发射的各25％能量，所述每个二级CPL与所述2个一级CPL连接，所述三级CPL集合中的每个三级CPL输出的每一路三级泵浦激光包含与4个一级CPL输入端口连接的4个泵浦激光器发射的各12.5％的能量，所述每个三级CPL与2个二级CPL连接，所述2个二级CPL与所述4个一级CPL连接。
  16. 根据权利要求10至13中任一项所述的海底网络设备，其特征在于，所述一级CPL集合中的每个一级CPL的输入端口连接4个泵浦激光器，所述每个一级CPL输出的每一路一级泵浦激光包含与所述每个一级CPL输入端口连接的4个泵浦激光器发射的各50％能量，所述二级CPL集合中的每个二级CPL输出的每一路二级泵浦激光包含与2个一级CPL输入端口连接的8个泵浦激光器发射的各25％能量，所述每个二级CPL与所述2个一级CPL连接，所述三级CPL集合中的每个三级CPL输出的每一路三级泵浦激光包含与4个一级CPL输入端口连接的16个泵浦激光器发射的各12.5％的能量，所述每个三级CPL与2个二级CPL连接，所述2个二级CPL与所述4个一级CPL连接。
  17. 根据权利要求10至13中任一项所述的海底网络设备，其特征在于，所述泵浦激光器集合、所述EDFA集合、所述一级CPL集合、所述二级CPL集合以及所述三级CPL集合分别设置于不同平面。
  18. 根据权利要求10至13中任一项所述的海底网络设备，其特征在于，所述泵浦激光器集合中的各泵浦激光器、所述EDFA集合中的各EDFA、所述一级CPL集合中的各一级CPL、所述二级CPL集合中的各二级CPL以及所述三级CPL集合中的各三级CPL均呈环形放置。
  19. 一种海底网络设备，包括泵浦激光器集合、掺铒光纤放大器EDFA集合、一级光纤耦合器CPL集合及二级CPL集合，其中所述一级CPL集合至少包括三个一级CPL，所述二级CPL集合至少包括三个二级CPL，所述一级CPL集合中的每个一级CPL的输入端口至少连接有一个泵浦激光器，所述二级CPL集合中的每个二级CPL的输出端口连接所述EDFA集合中的至少一个EDFA，所述一级CPL集合中至少有一个一级CPL的输出端口分别连接不同的两个二级CPL，所述不同的两个二级CPL之间相隔一个二级CPL，所述二级CPL集合中至 少有一个二级CPL的输入端口分别连接不同的两个一级CPL，所述不同的两个一级CPL之间相隔一个一级CPL；
    所述泵浦激光器集合中的每个泵浦激光器用于发射泵浦激光，所述一级CPL集合中至少有一个一级CPL用于对接收到的泵浦激光进行耦合，并输出两路一级泵浦激光，所述两路一级泵浦激光分别输出至所述不同的两个二级CPL，所述二级CPL集合中至少有一个二级CPL用于对接收到的一级泵浦激光进行耦合，并输出至少一路二级泵浦激光至所述至少一个EDFA。
  20. 根据权利要求19所述的海底网络设备，其特征在于，所述EDFA集合中的每个EDFA对应有一路光纤，所述二级CPL集合中的每个二级CPL的输出端口连接有2个EDFA。
  21. 根据权利要求20所述的海底网络设备，其特征在于，所述每个二级CPL输出端口连接的2个EDFA所对应的2路光纤构成一组光纤对。
  22. 根据权利要求20所述的海底网络设备，其特征在于，所述每个二级CPL输出端口连接的其中一个EDFA所对应的一路光纤以及与所述每个二级CPL相邻的一个二级CPL输出端口连接的其中一个EDFA所对应的一路光纤构成一组光纤对。
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JP7119110B2 (ja) 2022-08-16
EP3748874A1 (en) 2020-12-09
US20210028591A1 (en) 2021-01-28
CN111344965B (zh) 2022-12-20

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