Optical Fiber Transmission Network Real-time Monitoring And Fault Diagnosis System

Up to now, although the fiber optical transmission network' s own monitor and management system are good, without other communication means, we can not judge what reason cause the abort of the fiber optical transmission network which has only one communication route by using the technique and means in existence. The reason causing the abort of the fiber optical transmission network may be whether optical terminal and power of the network' s remote stations go wrong, or the optical cable is in abort. So we had researched and developed the Real Time Monitor And Abort Diagnosed system (using "RTMAAD system" as an abbreviation) for fiber optical transmission network to solve the problem and to realize fast abort ' s auto diagnosis and location.In this paper, firstly the origin and research significance of the project were introduced, the general design of the RTMAAD system wes introduced as follow. Then, we discussed and analyzed in detail the RTMAAD system' s key technologies such as digital signal processing and wave division multiplexing of optical fiber communication system, etc. Lastly, engineering' s realization of the RTMAAD system was introduced.The RTMAAD system was integrated with digital signal processing (DSP), global information system (CIS), optic time domain reflective (OTDR) meter technology, wave division multiplexing (WDM) technology, etc. The RTMAAD system made a realization that optical cable' s abort is auto located exactly. At the same time, The RTMAAD system can monitor and diagnose both the optical terminal' s fault and power' s error of the stations of the fiber optical transmission network. The realization of the RTMAAD system added a reliable means to the management system of the whole communication network.