Optical communication system, optical node, and optical power supply method

The optical communication system uses an optical branching unit and photoelectric conversion to manage multiple optical nodes with a single laser, addressing control complexity and failure issues, ensuring stable power supply and communication.

JP7740541B2Active Publication Date: 2025-09-17NIPPON TELEGRAPH & TELEPHONE CORP
View PDF 5 Cites 0 Cited by

Patent Information

Application Number
JP2024522859
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-05-27
Publication Date
2025-09-17
Estimated Expiration
2042-05-27

AI Technical Summary

Technical Problem

Existing optical communication systems face complexity in controlling optical switches, difficulty in managing power supply to multiple optical nodes, and instability due to failure of optical switches, leading to challenges in simple control and communication management.

Method used

The system employs an optical branching unit to distribute power to multiple optical nodes via optical fibers, using a photoelectric conversion unit to charge storage batteries and a control unit to manage power status, eliminating the need for complex switch control and enabling stable power supply.

Benefits of technology

This configuration allows for simple management of all optical nodes with a single laser, ensuring continuous power supply and communication, reducing failure risks and enabling efficient power distribution based on node-specific needs.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 0007740541000001
    Figure 0007740541000001
  • Figure 0007740541000002
    Figure 0007740541000002
  • Figure 0007740541000003
    Figure 0007740541000003
Patent Text Reader

Abstract

The purpose of the present invention is to provide an optical communication system, an optical node, and an optical power transfer method with which all optical nodes can be managed by a simple control method.　In an optical communication system 301, a plurality of optical nodes (1-1, 1-2, 1-3, and so on) are connected in series by optical fibers 16 going downstream from a controller 17 upstream, and the controller 17 performs optical power transfer to each of the optical nodes (1-1, 1-2, 1-3, and so on). Each optical node 1 comprises: an optical splitting unit 2 that splits light from the upstream side and passes one beam of the split light to the downstream side; a photoelectric conversion unit 5 that charges a storage battery 8 with the other beam of light split by the optical splitting unit 2; a control unit (microcontroller) 11 that, in the case where the other beam of light contains a query signal comprising an identification code and a power storage response timing code, ascertains the power storage status of the storage battery 8 if the identification code is the identification code of the control unit 11; and a modulation unit 10 that modulates the other beam of light and transmits the power storage status to the controller 17 at the time indicated by the power storage response timing code.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Optical power information transmission system

    JP2006165651A

  • Optical fiber power supply system

    JP2021019441A

  • Optical power supply system

    JP2021019444A

  • Optical power feeding system

    WO2022024270A1

  • Optical node

    WO2022102103A1