Loopback fast optical power recovery apparatus, method and long distance optical transmission system

By adding a loopback optical switch unit to the optical multiplexing section terminal station, optical power can be quickly restored, solving the problem of large downstream impact caused by the slow WSS adjustment speed, and realizing the rapid recovery and stability of the optical transmission system.

CN119030596BActive Publication Date: 2026-05-19ACCELINK TECHNOLOGIES CO LTD
View PDF 3 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ACCELINK TECHNOLOGIES CO LTD
Filing Date
2024-07-17
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

In long-distance dense wavelength division multiplexing optical transmission systems, optical channel power anomalies caused by optical path or equipment failures, coupled with the slow WSS adjustment speed in existing technologies, result in excessive impact on downstream optical multiplexing sections.

Method used

Adding a loopback optical switch unit to the input end of the optical multiplexing section station allows for rapid switching of the loopback state when abnormal optical power is detected, looping the optical signal back to the preamplifier or transmitting it to the remote station, maintaining consistent optical power and reducing the impact on downstream applications.

Benefits of technology

It enables rapid restoration of optical power in the event of optical transmission link failure, reduces the impact on downstream optical multiplexing sections, ensures communication continuity and stability, and meets laser safety requirements.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119030596B_ABST
    Figure CN119030596B_ABST
Patent Text Reader

Abstract

The application relates to the field of optical communication technology, and provides a device and method for loopback fast optical power recovery and a long-distance optical transmission system. When the optical power of first service light is not in a normal range, a loopback light switch unit is switched to a first loopback state, second service light of the same site is conducted to a pre-amplifier, the input optical power of the pre-amplifier is recovered to normal, and the output optical power of the pre-amplifier in a fault state is ensured to be the same as in a normal state; when the optical power of the second service light is not in the normal range, the loopback light switch unit is switched to a second loopback state, the first service light of the same site is transmitted to a remote site, the optical power to the remote site is recovered to normal, and the optical power to the remote site in the fault state is ensured to be the same as in the normal state; thus, the influence on the input of a downstream optical multiplexing section is minimized, and the problem that the WSS adjusting speed is too slow in the prior art is solved.
Need to check novelty before this filing date? Find Prior Art