The design of communication network optical fiber cable condition monitoring system based on distributed optical fiber sensor

摘要

This paper proposes the solution to improve existing optical fiber cable condition monitoring system using distributed optical fiber sensor. This scheme integrates optical fiber communication network and sensor network. The sensing network utilize the sensing signal sent by the communication channel of the existing optical fiber access network so as to facilitate the transmission in the optical fiber communication network. And for the two different communication signals of sensor signal and communication signal, it is proposed to couple them according to time-division multiplexing in fixed frame, which can not only solve the problem of time slot and bandwidth allocation in multiplex transmission, but also perfect Existing cable monitoring system security management functions. The design does not need to build an additional sensor line, the rapid response to failure and timely detection of network security risks exist in the prevention of optical fiber communication network security incident has an important value.