System and method for monitoring optical cable of backbone network

Abstract

The invention discloses a system and a method for monitoring an optical cable of a backbone network. The system comprises a light source, an optical pulse forming unit, a photoelectric detection unit, a data processing unit, an early warning unit and a display unit; the optical pulse forming unit is used for generating local oscillation light and pulsed light according to the light emitted by the light source, the pulsed light is transmitted to a measured sensing optical cable, and backward Rayleigh scattering light generated by the pulsed light in a propagation process is sent to the photoelectric detection unit together with the local oscillation light; the photoelectric detection unit is used for carrying out coherent detection on the backward Rayleigh scattering light and the local oscillation light; the data processing unit is used for carrying out data processing on the signal output by the photoelectric detection unit and outputting a monitoring result; the early warning unit is used for carrying out fault early warning according to the monitoring result; and the display unit is used for displaying a map and locating the fault position according to the map and the monitoring result, and the map comprises a backbone network circuit and an optical cable. The system and the method disclosed by the invention are used for actively monitoring the performance of the optical cable in real time, finding faults or hidden trouble in time and carrying out fault locating and fault early warning.

Description

technical field [0001] The invention relates to the technical field of optical cable monitoring, in particular to a backbone network optical cable monitoring system and method. Background technique [0002] At present, the radio and television network (group) companies in various provinces and cities in my country have basically built their own urban backbone optical cable networks covering core users. Compared with traditional telecommunication, wireless and other means of communication, optical fiber communication technology has unparalleled advantages, that is, large communication capacity, long relay distance, good confidentiality performance, and strong adaptability, but this large capacity and long distance At present, most of the optical cable transmission network in the radio and television system is maintained and managed through simple line inspection and emergency fault repair. With the gradual increase of fusion breakpoints, the performance of the optical cable t...

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a backbone network optical cable monitoring system and method to at least solve the problem that the existing passive test cannot find faults in time and the accuracy of fault discrimination is not high

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