Optical switch device and long-distance optical transmission system

The optical switch device and system facilitate remote control and monitoring of Raman amplifiers in long-distance optical transmission systems, improving efficiency by allowing seamless switching and real-time status checks, thus reducing manual intervention and service disruptions.

WO2026042213A1PCT designated stage Publication Date: 2026-02-26NT T INC
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Patent Information

Application Number
PCT/JP2024/029676
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-08-21
Publication Date
2026-02-26

AI Technical Summary

Technical Problem

Existing long-distance optical transmission systems face inefficiencies in installation testing and cable relocation due to the need for manual intervention to switch between working and backup lines, and to check the status of Raman amplifiers, which are prone to failure from cable end contamination or connector misalignment.

Method used

An optical switch device and system that enables remote control and status monitoring of Raman amplifiers, allowing seamless switching between working and backup lines, and providing real-time status information through a networked system, reducing the need for on-site manual checks.

Benefits of technology

Enhances operational efficiency by enabling remote operation and real-time monitoring, minimizing service interruptions during cable installation and relocation, and ensuring Raman amplifiers are functioning correctly without requiring technicians to visit each site.

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Abstract

The present invention connects a long-distance transmission section 33 by optical fiber cables 34 which include an active line 34a and an auxiliary line 34b, and improves the efficiency of work when a commissioning test of an optical communication system, including an activation check of a Raman amplifier 14 in each optical transmission device, is performed for two systems of the active line and the auxiliary line. Optical switch devices 20A, 20B are connected to respective optical transmission devices 10A, 10B. The optical switch devices 20A, 20B each include an optical switch unit 21, a remote control unit 22, a state recognition unit 23, and an opposing switch control unit 24. The optical switch unit 21 switches a route between the active line and the auxiliary line. The remote control unit 22 enable external remote control. The state recognition unit 23 acquires information which indicates a state of the Raman amplifier from the optical transmission device. The opposing switch control unit 24 has the function of remotely operating the function of another optical transmission device 10B that is located at an opposing position. The active line / auxiliary line and an optical transmission path of a connection line 35 are used to perform communication for control. The present invention makes it possible for a manager or a worker to perform work by remote operation without moving to a site.
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Citation Information

Patent Citations

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