Optical-fiber line fault down stream alarm inhibiting method, apparatus and system

Abstract

This invention discloses a suppression method for realizing fault lower stream alarm of fiber line, a quick resume method based on said method and an optical amplifier for realizing the alarm suppression and an optical communication system including: adjacent station points at both sides of the fault point keep the optical signal output to its own lower stream station points after testing fault of fiber circuit and load ID signals carrying the alarm suppression information, after the lower stream station points receive the ID signals, they maintain the normal working state, after the fault is tested and modified, the adjacent station points stop loading said ID signals to the lower points and resumes the normal working state and the lower stream station points continue the normal working state.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a method for suppressing downstream alarms of optical fiber line faults, a fast recovery method for optical fiber line faults based on the method, an optical amplifier and an optical communication system for suppressing downstream alarms of optical fiber line faults. Background technique [0002] Due to the good directionality of the laser, the intensity in the output direction is particularly high, and the threat to the human eye is also particularly large. Especially for lasers used in existing communication systems, the light wavelengths are generally distributed around short-wave 670nm, long-wave 1310nm and 1550nm, all of which are outside the range of visible light, and the human eye cannot directly see the beam, so it may cause damage to the human eye. more sexual. Moreover, since the invention of Erbium-doped Fiber Amplifier (EDFA) and Wavelength Division Mu...

AI Technical Summary

Problems solved by technology

It takes a certain amount of time for the amplifier to restore the output, which results in a long self-recovery time of the entire optical communication system, especially the more cascaded amplifiers, the longer the recovery time

Moreover, after a fiber cut fault, the adjacent amplifiers in the faulty section will turn off the output. After the downstream amplifier cannot receive the optical signal, it will also judge that the network is faulty and generate an alarm. The result is a fault in one place, causing all nodes in the entire network to go online Reporting alarm information makes it difficult to locate faults in the entire network, and sudden alarm information will cause system overhead channel and server congestion, resulting in network chaos

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