A Distributed Optical Fiber Automatic Monitoring System

Abstract

The invention provides a distributed optical fiber automatic monitoring system, which can realize automatic collection, analysis and remote monitoring of optical fiber performance parameters, has high detection accuracy, and can accurately locate fault points. Signal acquisition module, optical signal processing module, communication module, remote monitoring platform, optical signal acquisition module includes controller, optical time domain reflectometer, Raman optical time domain reflectometer, wavelength division multiplexer, optical power meter, optical signal The processing module communicates with the remote monitoring platform through the communication module. The incident light and detection light emitted by the light source are respectively injected from both ends of the optical fiber, and Brillouin backscattered light and Raman backscattered light are generated on the optical fiber. Optical signals The collection module is used to collect the time and intensity of Brillouin backscattered light and Raman backscattered light, and the above-mentioned optical fiber automatic monitoring system is used to monitor the optical power information, signal-to-noise ratio, and temperature information of the optical fiber.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to an optical fiber automatic monitoring system. Background technique [0002] With the rapid development of optical fiber technology and optical communication technology, optical fiber has been widely used in automatic production control, on-line detection, fault diagnosis, etc. As a medium for light wave transmission of information, optical fiber has the characteristics of anti-electromagnetic interference, electrical insulation, and corrosion resistance. It is convenient and effective to be used in various large-scale electromechanical, petrochemical, mine and other harsh environments such as strong electromagnetic interference and flammable and explosive. Optical fiber problems such as large tension may cause large fiber attenuation and high bit error rate, which will affect the normal operation of the network. Therefore, reliable maintenance of WDM networks ...

AI Technical Summary

Problems solved by technology

[0003] However, under the Mesh trend of WDM networks, network services are more flexible. Frequent additions and deletions of services make the commissioning and maintenance of WDM networks increasingly complex. Traditional manual operations cannot meet the needs of WDM network development. The reason is that The traditional optical fiber and cable configuration method is cumbersome. When it is necessary to monitor and optimize the performance of the optical layer of the network, each site needs to be configured separately, which is time-consuming and laborious, and scattered configuration operations are prone to omissions and problems. Once a problem occurs, it is necessary to operate The maintenance personnel went to the site to check each network element of the whole network, and the operation and maintenance efficiency was low; various factors such as optical fiber aging, device aging, wave addition, and optical power fluctuation caused by the external environment caused the network performance to gradually deteriorate, and only manual scheduled maintenance was required. Unable to find out in time, it needs to invest a lot of manpower and time cost to collect and analyze the data of the whole network. This method of manually analyzing the fault point by point takes a long time, the workload and complexity are large, and the optical fiber network cannot be quickly restored to normal operation.

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