The Research Of OTDR Testing System For Optical Fiber Cable

With the development of communication technology, the communication capability based on optical fiber cable becomes larger, and the security of communication should meet a higher specification. Improving communication net service quality has become an important object for communication net construct and maintenance.To solve the problem above, a redundancy optical fiber cable is prepared to be used when the trouble comes out, and by the redundancy the communication can be resumed. But with the development of communication, the manner using redundancy optical fiber cable can not satisfying the requirements of clients.In the last 10 years, China Mobile Communication Company (CMCC) applied itself to develop some new testing systems for optical fiber cable to meet the requirement from market. Testing system for optical fiber cable grounded on OTDR is one of the research products, by which operators can test and manage optical fiber cable in real-time. The presentation of testing system for optical fiber cable grounded on OTDR turns the passive maintenance manner into active maintenance one and decreases the cost of the company.The author took part in the development of testing system and carried out a series of research works on requirements' analysis, system function partition, and system structure design.The contributions are as follows:(1) Attend the investigation of the application of testing systems in CMCC, and compare the manual testing manner and automatic testing manner for optical fiber cable. At the same time, analyze the revenue bringing by the application of automatic testing system based OTDR.(2) Have a analysis for automatic testing system, and take part in the design of system structure, logic structure and function structure. The internet structure and developing software are also discussed.(3) Introduce the realization of software system based on the automatic testing system of Fujian Mobile Communication Company.(4) Have some researches on the integration between the testing system of optical fiber cable and resources management system based on the requirement of CMCC.