WO2023188086A1 - Répéteur optique et système de communication optique - Google Patents

Répéteur optique et système de communication optique Download PDF

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Publication number
WO2023188086A1
WO2023188086A1 PCT/JP2022/015903 JP2022015903W WO2023188086A1 WO 2023188086 A1 WO2023188086 A1 WO 2023188086A1 JP 2022015903 W JP2022015903 W JP 2022015903W WO 2023188086 A1 WO2023188086 A1 WO 2023188086A1
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Prior art keywords
optical
demultiplexer
light
optical multiplexer
unit
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PCT/JP2022/015903
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English (en)
Japanese (ja)
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上総 宇賀神
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日本電気株式会社
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Priority to PCT/JP2022/015903 priority Critical patent/WO2023188086A1/fr
Publication of WO2023188086A1 publication Critical patent/WO2023188086A1/fr

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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
    • H04B10/03—Arrangements for fault recovery
    • 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

Definitions

  • the present disclosure relates to an optical repeater and an optical communication system.
  • optical repeater In optical communication systems aimed at long-distance transmission, such as submarine optical cable systems, multiple optical repeaters are inserted into the transmission path to electrically compensate for optical signal attenuation.
  • the optical repeater has an optical amplifier that amplifies the optical signal, and as such an optical amplifier, an erbium-doped optical fiber amplifier (EDFA) that can directly amplify the optical signal is used. ing.
  • EDFA erbium-doped optical fiber amplifier
  • the influence of the voltage drop of the optical repeaters increases with the number of optical repeaters inserted. Therefore, it is required to suppress the voltage drop inside the optical repeater.
  • Patent Document 1 discloses an optical repeater in which one control unit controls an excitation light source including two light emitting elements, that is, the number of control units controlling the excitation light source is reduced.
  • the method of reducing the voltage consumption of an optical amplifier by increasing the number of pumping light sources controlled by one control unit is a trade-off with the robustness of the optical amplifier, since the number of pumping light sources that will stop functioning due to failure of the control unit increases.
  • an object of the present disclosure is to provide an optical repeater that suppresses voltage consumption and maintains robustness against failure of the control unit.
  • the optical repeater includes a first unit including a first light emitting element, a first optical demultiplexer, a first optical multiplexer, a first wavelength division multiplexing coupler, and a first optical amplifier, and a second light emitting element.
  • a second unit including a second optical demultiplexer, a second optical multiplexer, a second wavelength division multiplexing coupler, and a second optical amplifier; a first control unit that controls the first light emitting element; A second control section that controls the light emitting element.
  • the first optical demultiplexer branches the light output from the first light emitting element, supplies the branched light to the first optical multiplexer and the second optical multiplexer, and supplies the branched light to the first optical multiplexer and the second optical multiplexer, respectively.
  • the optical demultiplexer branches the light output from the second light emitting element and supplies the branched light to the first optical multiplexer and the second optical multiplexer, respectively.
  • the first optical multiplexer multiplexes the lights supplied from the first optical demultiplexer and the second optical demultiplexer, and supplies the combined light to the first wavelength division multiplexing coupler.
  • the second optical multiplexer multiplexes the lights supplied from the first optical demultiplexer and the second optical demultiplexer, and supplies the combined light to the second wavelength division multiplexing coupler.
  • the first wavelength division multiplexing coupler multiplexes the light multiplexed by the first optical multiplexer and a first optical signal, supplies the multiplexed light to the first optical amplifier, and supplies the multiplexed light to the first optical amplifier.
  • the two-wavelength division multiplexing coupler combines the light multiplexed by the second optical multiplexer with a second optical signal, and supplies the multiplexed light to the second optical amplifier.
  • An optical communication system includes an optical transmitter that transmits an optical signal, an optical receiver that receives the optical signal, an optical fiber that transmits the optical signal, and an optical repeater that is inserted into the optical fiber. and.
  • the optical repeater includes a first unit including a first light emitting element, a first optical demultiplexer, a first optical multiplexer, a first wavelength division multiplexing coupler, and a first optical amplifier; a second unit including an optical demultiplexer, a second optical multiplexer, a second wavelength division multiplexing coupler, and a second optical amplifier; a first controller that controls the first light emitting element; and a second unit that controls the first light emitting element. and a second control section for controlling.
  • the first optical demultiplexer branches the light output from the first light emitting element, supplies the branched light to the first optical multiplexer and the second optical multiplexer, and supplies the branched light to the first optical multiplexer and the second optical multiplexer, respectively.
  • the optical demultiplexer branches the light output from the second light emitting element and supplies the branched light to the first optical multiplexer and the second optical multiplexer, respectively.
  • the first optical multiplexer multiplexes the lights supplied from the first optical demultiplexer and the second optical demultiplexer, and supplies the combined light to the first wavelength division multiplexing coupler.
  • the second optical multiplexer multiplexes the lights supplied from the first optical demultiplexer and the second optical demultiplexer, and supplies the combined light to the second wavelength division multiplexing coupler.
  • the first wavelength division multiplexing coupler multiplexes the light multiplexed by the first optical multiplexer and a first optical signal, supplies the multiplexed light to the first optical amplifier, and supplies the multiplexed light to the first optical amplifier.
  • the two-wavelength division multiplexing coupler combines the light multiplexed by the second optical multiplexer with a second optical signal, and supplies the multiplexed light to the second optical amplifier.
  • An optical repeater includes a first control section and a second control section, and further includes a first light emitting element, a second light emitting element, a third light emitting element, a first optical demultiplexer, and a second light emitting element.
  • the first control section controls the first light emitting element, the second light emitting element, and the third light emitting element of the first unit
  • the second control section controls the first light emitting element of the second unit. control device, the second light emitting device, and the third light emitting device.
  • the first optical demultiplexer branches the light output from the first light emitting element and supplies the branched light to the first optical multiplexer/demultiplexer of the first unit and the second unit, respectively.
  • the second optical demultiplexer branches the light output from the second light emitting element and supplies the branched light to the second optical multiplexer/demultiplexer of the first unit and the second unit, respectively.
  • the third optical demultiplexer branches the light output from the third light emitting element, and sends the branched light to the third optical multiplexer/demultiplexer of the first unit and the second unit, respectively.
  • the first optical multiplexer/demultiplexer of the first unit multiplexes and branches the light supplied from the first optical demultiplexer, and sends the branched light to the fourth optical multiplexer of the first unit.
  • the first optical multiplexer/demultiplexer of the second unit multiplexes and branches the light supplied from the first optical multiplexer/demultiplexer;
  • the branched lights are respectively supplied to the fourth optical multiplexer/demultiplexer and the fifth optical multiplexer/demultiplexer of the second unit, and the second optical multiplexer/demultiplexer of the first unit supplies the second optical multiplexer/demultiplexer to the second optical multiplexer/demultiplexer of the first unit.
  • the light supplied from the device is multiplexed and branched, and the branched light is supplied to the fourth optical multiplexer/demultiplexer of the first unit and the second unit, respectively, and the second The optical multiplexer/demultiplexer multiplexes and branches the light supplied from the second optical demultiplexer, and sends the branched light to the sixth optical multiplexer/demultiplexer of the first unit and the second unit, respectively. and the third optical multiplexer/demultiplexer of the first unit multiplexes and branches the light supplied from the third optical demultiplexer, and sends the branched light to each of the first unit.
  • the fifth optical multiplexer/demultiplexer and the sixth optical multiplexer/demultiplexer, and the third optical multiplexer/demultiplexer of the second unit multiplexes the light supplied from the third optical multiplexer/demultiplexer. and supplies the branched lights to the fifth optical multiplexer/demultiplexer and the sixth optical multiplexer/demultiplexer of the second unit, respectively.
  • optical repeater that suppresses voltage consumption and maintains robustness against failure of the control unit.
  • FIG. 1 is a configuration diagram of an optical repeater according to Embodiment 1.
  • FIG. 2 is a diagram showing a part of the optical repeater surrounded by a broken line in FIG. 1.
  • FIG. FIG. 2 is a configuration diagram of an optical communication system according to a second embodiment.
  • FIG. 3 is a configuration diagram of an optical repeater according to a third embodiment.
  • FIG. 1 shows the configuration of an optical repeater according to this embodiment.
  • the optical repeater 100 includes a control unit A101, a control unit B102, eight light emitting elements (LDA1, LDA2, LDA3, LDA4, LDB1, LDB2, LDB3, LDB4), and light output from the light emitting elements.
  • 8 optical demultiplexers (CA11, CB11, CA12, CB12, CA13, CB13, CA14, CB14) that separate the demultiplexed lights
  • 8 optical multiplexers CA21, CB21, CA22
  • the control unit A101 controls the light emitting element LDA1, the light emitting element LDA2, the light emitting element LDA3, and the light emitting element LDA4.
  • the control unit B102 controls the remaining light emitting elements LDB1, LDB2, LDB3, and LDB4 that are not controlled by the control unit A101.
  • one light emitting element, one optical demultiplexer, one optical multiplexer, one wavelength division multiplexing coupler, and one optical amplifier are considered as one unit.
  • the control unit A101 and the control unit B102 each control the light emitting elements of four units.
  • FIG. 2 shows a part of the optical repeater 100 surrounded by a broken line in FIG. 1, that is, the two units described above.
  • a unit including a light emitting element controlled by the control unit A101 will be referred to as a first unit
  • a unit including a light emitting element controlled by the control unit B102 will be referred to as a second unit.
  • the optical demultiplexer CA11 of the first unit branches the light A1 output from the light emitting element LDA1.
  • the branched light is supplied to the optical multiplexer CA21 of the first unit and the optical multiplexer CB21 of the second unit, respectively.
  • the light intensity supplied to the optical multiplexer CA21 and the optical multiplexer CB21 is 50% of the light A1, respectively.
  • the optical demultiplexer CB11 of the second unit branches the light B1 output from the light emitting element LDB1.
  • the branched light is supplied to the optical multiplexer CA21 of the first unit and the optical multiplexer CB21 of the second unit, respectively.
  • the light intensity supplied to the optical multiplexer CA21 and the optical multiplexer CB21 is 50% of the light B1, respectively.
  • the optical demultiplexer according to this embodiment preferably uses a 1x2 optical fiber coupler. Furthermore, although the light output from the light emitting element shown in Fig. 2 is split into lights with 50% light intensity by an optical demultiplexer, the splitting ratio of the light is not limited to this, and can be set at any ratio.
  • the branched light may be supplied to an optical multiplexer.
  • the optical multiplexer CA21 of the first unit combines light with an optical intensity of 50% of the optical beam A1 supplied from the optical demultiplexer CA11 and optical intensity of 50% of the optical beam B1 supplied from the optical demultiplexer CB11.
  • the combined excitation light is supplied to the wavelength division multiplexing coupler CA31.
  • the optical multiplexer CB21 of the second unit splits light having an optical intensity of 50% of the light A1 supplied from the optical demultiplexer CA11 and 50% of the optical intensity of the light B1 supplied from the optical demultiplexer CB11.
  • the combined pump light is supplied to the wavelength division multiplex coupler CB31.
  • the optical multiplexer according to this embodiment preferably uses a 1x2 optical fiber coupler.
  • the wavelength division multiplexing coupler CA31 multiplexes the input first optical signal SIG1 and the pumping light supplied from the optical multiplexer CA21, and supplies the multiplexed light to the first optical amplifier FA1.
  • the wavelength division multiplexing coupler CB31 multiplexes the input first optical signal SIG2 and the pump light supplied from the optical multiplexer CB21, and supplies the multiplexed light to the second optical amplifier FA2.
  • the first optical amplifier FA1 amplifies the first optical signal SIG1 using the light multiplexed by the wavelength division multiplexing coupler CA31.
  • the second optical amplifier FA2 amplifies the second optical signal SIG2 using the light multiplexed by the wavelength division multiplexing coupler CB31.
  • EDFA erbium-doped fiber amplifier
  • the control unit A101 and the control unit B102 control the four first units and the four second units, respectively, as described above. Therefore, the optical repeater according to the present disclosure can reduce the number of control units by controlling the excitation light source including four light emitting elements with one control unit, thereby reducing the power consumption of the optical repeater. becomes possible.
  • the optical signal SIG1 and the optical signal SIG2 can be amplified by the pumping light controlled by the other control unit. Even if either the light emitting element LDA1 or the light emitting element LDB1, not the control unit, fails, the function of the optical amplifier is maintained because excitation light with an intensity of 50% of the light output from the light emitting element can be supplied. be done. Therefore, the optical repeater according to the present disclosure can maintain robustness against failures of the control unit and the excitation light source.
  • the present disclosure can provide an optical repeater that suppresses voltage consumption and maintains robustness against failures of the control unit and excitation light source.
  • FIG. 3 shows the configuration of the optical communication system according to this embodiment.
  • the optical communication system includes an optical transmitter 201, an optical receiver 202, an optical fiber 203, and the optical repeater 100 according to the first embodiment.
  • the optical transmitter 201 transmits an optical signal SIG
  • the optical receiver 202 receives the optical signal SIG transmitted from the optical transmitter 201.
  • Optical signal SIG is transmitted via optical fiber 203.
  • optical communication systems aimed at long-distance transmission such as submarine optical cable systems
  • the longer the distance over which the optical signal SIG is transmitted the more pronounced the attenuation of the optical signal SIG becomes. Therefore, a plurality of optical repeaters 100 are inserted between the optical transmitter 201 and the optical receiver 202 to amplify the optical signal SIG.
  • the optical repeater 100 according to this embodiment has the same configuration as the optical repeater 100 according to the first embodiment. Thereby, it is possible to provide an optical communication system including an optical repeater that suppresses voltage consumption and maintains robustness against failures of the control unit and the excitation light source.
  • FIG. 4 shows the configuration of the optical repeater according to this embodiment.
  • the optical repeater 100 according to the present embodiment includes a control unit A101, a control unit B102, six light emitting elements (LDA1, LDA2, LDA3, LDB1, LDB2, LDB3), and branches light output from the light emitting elements. 6 optical demultiplexers (CA11, CB11, CA12, CB12, CA13, CB13), 12 optical multiplexer/demultiplexers (CA21, CB21, CA22, CB22) that multiplex and further demultiplex the demultiplexed light.
  • 6 optical demultiplexers CA11, CB11, CA12, CB12, CA13, CB13
  • 12 optical multiplexer/demultiplexers CA21, CB21, CA22, CB22
  • WDMCPL 12 wavelength division multiplex couplers
  • the control unit A101 controls the light emitting element LDA1, the light emitting element LDA2, and the light emitting element LDA3.
  • the control unit B102 controls the remaining light emitting elements LDB1, LDB2, and LDB3 that are not controlled by the control unit A101.
  • three light emitting elements three optical demultiplexers, six optical multiplexers/demultiplexers, six wavelength division multiplex couplers, and six optical amplifiers are considered as one unit.
  • the unit including the light emitting device LDA1, the light emitting device LDA2, and the light emitting device LDA3 controlled by the control unit A101 will be referred to as a first unit, and the unit including the light emitting device LDB1, the light emitting device LDB2, and the light emitting device LDB3 controlled by the control unit B102.
  • a unit equipped with this is called a second unit.
  • the six optical multiplexers/demultiplexers are provided, three each in the front stage and the rear stage.
  • the optical multiplexer/demultiplexer CA21, the optical multiplexer/demultiplexer CA22, and the optical multiplexer/demultiplexer CA23 of the first unit, and the optical multiplexer/demultiplexer CB21, the optical multiplexer/demultiplexer CB22, and the optical multiplexer/demultiplexer CB23 of the second unit are in the previous stage. It is provided.
  • optical multiplexer/demultiplexer CA31, the optical multiplexer/demultiplexer CA32, and the optical multiplexer/demultiplexer CA33 of the first unit, and the optical multiplexer/demultiplexer CB31, the optical multiplexer/demultiplexer CB32, and the optical multiplexer/demultiplexer CB33 of the second unit are installed in the latter stage. It is provided.
  • the optical demultiplexer CA11 branches the light output from the light emitting element LDA1.
  • the branched lights are supplied to an optical multiplexer/demultiplexer CA21 and an optical multiplexer/demultiplexer CB21, respectively.
  • the optical demultiplexer CB11 branches the light output from the light emitting element LDB1.
  • the branched lights are supplied to an optical multiplexer/demultiplexer CA21 and an optical multiplexer/demultiplexer CB21, respectively.
  • the optical demultiplexer CA12 branches the light output from the light emitting element LDA2.
  • the branched lights are supplied to an optical multiplexer/demultiplexer CA22 and an optical multiplexer/demultiplexer CB22, respectively.
  • the optical demultiplexer CB12 branches the light output from the light emitting element LDB2.
  • the branched lights are supplied to an optical multiplexer/demultiplexer CA22 and an optical multiplexer/demultiplexer CB22, respectively.
  • the optical demultiplexer CA13 branches the light output from the light emitting element LDA3.
  • the branched lights are supplied to an optical multiplexer/demultiplexer CA23 and an optical multiplexer/demultiplexer CB23, respectively.
  • the optical demultiplexer CB13 branches the light output from the light emitting element LDB3.
  • the branched lights are supplied to an optical multiplexer/demultiplexer CA23 and an optical multiplexer/demultiplexer CB23, respectively.
  • the optical multiplexer/demultiplexer CA21 multiplexes and branches the light supplied from the optical demultiplexer CA11 and the optical demultiplexer CB11.
  • the branched lights are supplied to an optical multiplexer/demultiplexer CA31 and an optical multiplexer/demultiplexer CA32, respectively.
  • the optical multiplexer/demultiplexer CB21 multiplexes and branches the light supplied from the optical demultiplexer CA11 and the optical demultiplexer CB11.
  • the branched lights are supplied to an optical multiplexer/demultiplexer CB31 and an optical multiplexer/demultiplexer CB32, respectively.
  • the optical multiplexer/demultiplexer CA22 multiplexes and branches the light supplied from the optical demultiplexer CA12 and the optical demultiplexer CB12.
  • the branched lights are supplied to an optical multiplexer/demultiplexer CA31 and an optical multiplexer/demultiplexer CB31, respectively.
  • the optical multiplexer/demultiplexer CB22 multiplexes and branches the light supplied from the optical demultiplexer CA12 and the optical demultiplexer CB12.
  • the branched lights are supplied to an optical multiplexer/demultiplexer CA33 and an optical multiplexer/demultiplexer CB33, respectively.
  • the optical multiplexer/demultiplexer CA23 multiplexes and branches the light supplied from the optical demultiplexer CA13 and the optical demultiplexer CB13.
  • the branched lights are supplied to an optical multiplexer/demultiplexer CA32 and an optical multiplexer/demultiplexer CA33, respectively.
  • the optical multiplexer/demultiplexer CB23 multiplexes and branches the light supplied from the optical demultiplexer CA13 and the optical demultiplexer CB13.
  • the branched lights are supplied to an optical multiplexer/demultiplexer CB32 and an optical multiplexer/demultiplexer CB33, respectively.
  • the optical multiplexer/demultiplexer according to this embodiment preferably uses a 2x2 optical fiber coupler.
  • Optical multiplexer/demultiplexer CA31, optical multiplexer/demultiplexer CB31, optical multiplexer/demultiplexer CA32, optical multiplexer/demultiplexer CB32, optical multiplexer/demultiplexer CA33, and optical multiplexer/demultiplexer CB33 multiplex the supplied light and further branch it. do.
  • the branched excitation lights are respectively supplied to wavelength division multiplex couplers.
  • the wavelength division multiplexing coupler combines the input optical signal with optical multiplexer/demultiplexer CA31, optical multiplexer/demultiplexer CB31, optical multiplexer/demultiplexer CA32, optical multiplexer/demultiplexer CB32, optical multiplexer/demultiplexer CA33, and optical multiplexer/demultiplexer CB33.
  • the waved pump lights are multiplexed, and the multiplexed lights are supplied to optical amplifiers, respectively.
  • the optical amplifier amplifies each optical signal using light multiplexed by a wavelength division multiplexing coupler.
  • the present disclosure can provide an optical repeater that suppresses voltage consumption and maintains robustness against failures of the control unit and excitation light source.
  • a first unit including a first light emitting element, a first optical demultiplexer, a first optical multiplexer, a first wavelength division multiplexing coupler, and a first optical amplifier
  • a second unit including a second light emitting element, a second optical demultiplexer, a second optical multiplexer, a second wavelength division multiplexing coupler, and a second optical amplifier
  • a first control section that controls the first light emitting element
  • a second control section that controls the second light emitting element
  • the first optical demultiplexer branches the light output from the first light emitting element and supplies the branched light to the first optical multiplexer and the second optical multiplexer, respectively
  • the second optical demultiplexer branches the light output from the second light emitting element and supplies the branched light to the first optical multiplexer and the second optical multiplexer, respectively,
  • the first optical multiplexer multiplexes the lights supplied from the
  • the second optical multiplexer multiplexes the lights supplied from the first optical demultiplexer and the second optical demultiplexer, and supplies the combined light to the second wavelength division multiplexing coupler.
  • the first wavelength division multiplexing coupler multiplexes the light multiplexed by the first optical multiplexer and a first optical signal, and supplies the multiplexed light to the first optical amplifier,
  • the second wavelength division multiplexing coupler combines the light multiplexed by the second optical multiplexer with a second optical signal, and supplies the multiplexed light to the second optical amplifier. optical repeater.
  • At least four first units are provided, the first control section controls the four first light emitting elements, At least four second units are provided, and the second control section controls the four second light emitting elements.
  • the optical repeater described in Appendix 1. (Additional note 3)
  • the first optical amplifier and the second optical amplifier include erbium-doped optical fiber amplifiers,
  • the optical repeater according to supplementary note 1 or 2. (Additional note 4)
  • the first optical demultiplexer, the first optical multiplexer, the second optical multiplexer, and the second optical multiplexer each include a 1x2 optical fiber coupler.
  • the optical repeater according to any one of Supplementary Notes 1 to 3.
  • the optical repeater is a first unit including a first light emitting element, a first optical demultiplexer, a first optical multiplexer, a first wavelength division multiplexing coupler, and a first optical amplifier; a second unit including a second light emitting element, a second optical demultiplexer, a second optical multiplexer, a second wavelength division multiplexing coupler, and a second optical amplifier; a first control section that controls the first light emitting element; a second control section that controls the second light emitting element;
  • the first optical demultiplexer branches the light output from the first light emitting element and supplies the branched light to the first optical multiplexer and the second optical multiplexer, respectively,
  • the second optical demultiplexer branches the light output from the second light emitting element and supplies the branched light to the first optical multiplexer and the second optical multiplexer, respectively,
  • the second optical demultiplexer branches the light output from the second light emitting element and supplies the branched light to the first optical multiplexer and the second
  • the second optical multiplexer multiplexes the lights supplied from the first optical demultiplexer and the second optical demultiplexer, and supplies the combined light to the second wavelength division multiplexing coupler.
  • the first wavelength division multiplexing coupler multiplexes the light multiplexed by the first optical multiplexer and a first optical signal, and supplies the multiplexed light to the first optical amplifier,
  • the second wavelength division multiplexing coupler combines the light multiplexed by the second optical multiplexer with a second optical signal, and supplies the multiplexed light to the second optical amplifier.
  • Appendix 6 At least four first units are provided, the first control section controls the four first light emitting elements, At least four second units are provided, and the second control section controls the four second light emitting elements.
  • the optical communication system described in Appendix 5. Appendix 7) a first control section; a second control section; A first light emitting element, a second light emitting element, a third light emitting element, a first optical demultiplexer, a second optical demultiplexer, a third optical demultiplexer, a first optical multiplexer/demultiplexer, a second optical multiplexer.
  • a first unit and a second unit each including a demultiplexer, a third optical multiplexer/demultiplexer, a fourth optical multiplexer/demultiplexer, a fifth optical multiplexer/demultiplexer, and a sixth optical multiplexer/demultiplexer
  • the first control unit controls the first light emitting element, the second light emitting element, and the third light emitting element of the first unit
  • the second control unit controls the first light emitting element, the second light emitting element, and the third light emitting element of the second unit
  • the first optical demultiplexer branches the light output from the first light emitting element and supplies the branched light to the first optical multiplexer/demultiplexer of the first unit and the second unit, respectively.
  • the second optical demultiplexer branches the light output from the second light emitting element and supplies the branched light to the second optical multiplexer/demultiplexer of the first unit and the second unit, respectively.
  • the third optical demultiplexer branches the light output from the third light emitting element and supplies the branched light to the third optical multiplexer/demultiplexer of the first unit and the second unit, respectively.
  • the first optical multiplexer/demultiplexer of the first unit multiplexes and branches the light supplied from the first optical demultiplexer, and sends the branched light to the fourth optical multiplexer of the first unit.
  • the first optical multiplexer/demultiplexer of the second unit multiplexes and branches the light supplied from the first optical demultiplexer, and sends the branched light to the fourth optical multiplexer of the second unit. supplied to a demultiplexer and the fifth optical multiplexer/demultiplexer;
  • the second optical multiplexer/demultiplexer of the first unit multiplexes and branches the light supplied from the second optical demultiplexer, and sends the branched light to the first unit and the second unit, respectively.
  • the fourth optical multiplexer/demultiplexer The second optical multiplexer/demultiplexer of the second unit multiplexes and branches the light supplied from the second optical demultiplexer, and sends the branched light to the first unit and the second unit, respectively. to the sixth optical multiplexer/demultiplexer; The third optical multiplexer/demultiplexer of the first unit multiplexes and branches the light supplied from the third optical demultiplexer, and sends the branched light to the fifth optical multiplexer of the first unit.
  • the third optical multiplexer/demultiplexer of the second unit multiplexes and branches the light supplied from the third optical demultiplexer, and sends the branched light to the fifth optical multiplexer of the second unit. supplied to a demultiplexer and the sixth optical multiplexer/demultiplexer; optical repeater.
  • the first unit and the second unit include six wavelength division multiplex couplers and six optical amplifiers,
  • the fourth optical multiplexer/demultiplexer, the fifth optical multiplexer/demultiplexer, and the sixth optical multiplexer/demultiplexer are the first optical multiplexer/demultiplexer, the second optical multiplexer/demultiplexer, and the third optical multiplexer/demultiplexer.
  • the six wavelength division multiplexing couplers each combine the light and the optical signal multiplexed by the fourth optical multiplexer/demultiplexer, the fifth optical multiplexer/demultiplexer, and the sixth optical multiplexer/demultiplexer, supplying the multiplexed light to each of the six optical amplifiers;
  • Control unit A Control unit B 201 Optical transmitter 202 Optical receiver 203 Optical fiber

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Abstract

La divulgation concerne un répéteur optique qui réduit la consommation de tension et conserve une robustesse contre des défaillances d'unité de commande. Un répéteur optique (100) selon la présente divulgation comprend : deux unités, dont chacune comprend un émetteur de lumière, un démultiplexeur optique, un multiplexeur optique, un coupleur de multiplexage par répartition en longueur d'onde et un amplificateur optique ; une unité de commande A (101) qui commande un émetteur de lumière LDA1 d'une unité ; et une unité de commande B (102) qui commande un émetteur de lumière LDB1 de l'autre unité. Des démultiplexeurs optiques CA11 et CB11 divisent la lumière émise par les émetteurs de lumière LDA1 et LDB1, respectivement, et fournissent la lumière divisée au multiplexeur optique de chaque unité. Des multiplexeurs optiques CA21 et CB21 multiplexent la lumière et fournissent respectivement la lumière multiplexée au coupleur de multiplexage par répartition en longueur d'onde de chaque unité. Les coupleurs de multiplexage par répartition en longueur d'onde combinent chacun la lumière fournie avec un signal optique, et fournissent la lumière combinée à l'amplificateur optique de la même unité.
PCT/JP2022/015903 2022-03-30 2022-03-30 Répéteur optique et système de communication optique WO2023188086A1 (fr)

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Publication number Priority date Publication date Assignee Title
US20060140633A1 (en) * 2004-12-28 2006-06-29 Sanmina-Sci Corporation Systems and methods for optical pump redundancy
EP1841086A1 (fr) * 2006-03-27 2007-10-03 Alcatel Système d'alimentation d'un réseau de transmission, notamment sous-marin
WO2014208048A1 (fr) * 2013-06-24 2014-12-31 日本電気株式会社 Pilote de diode laser, dispositif d'amplification de lumière directe, système de transmission de signal lumineux et procédé de pilotage de diode laser
WO2018168696A1 (fr) * 2017-03-17 2018-09-20 日本電気株式会社 Système de câble optique sous-marin et dispositif de relais optique sous-marin
WO2020158532A1 (fr) * 2019-01-30 2020-08-06 日本電気株式会社 Dispositif d'amplification optique et procédé d'amplification optique
WO2021065308A1 (fr) * 2019-10-04 2021-04-08 日本電気株式会社 Répéteur optique et système de communication optique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060140633A1 (en) * 2004-12-28 2006-06-29 Sanmina-Sci Corporation Systems and methods for optical pump redundancy
EP1841086A1 (fr) * 2006-03-27 2007-10-03 Alcatel Système d'alimentation d'un réseau de transmission, notamment sous-marin
WO2014208048A1 (fr) * 2013-06-24 2014-12-31 日本電気株式会社 Pilote de diode laser, dispositif d'amplification de lumière directe, système de transmission de signal lumineux et procédé de pilotage de diode laser
WO2018168696A1 (fr) * 2017-03-17 2018-09-20 日本電気株式会社 Système de câble optique sous-marin et dispositif de relais optique sous-marin
WO2020158532A1 (fr) * 2019-01-30 2020-08-06 日本電気株式会社 Dispositif d'amplification optique et procédé d'amplification optique
WO2021065308A1 (fr) * 2019-10-04 2021-04-08 日本電気株式会社 Répéteur optique et système de communication optique

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