Monitoring Technology For Optical Fiber Communication

Along with the rapid development of optic communication in recenty,the length of fiber cable increases rapidly.So the problems of maintenance and management of the fiber cable increase too. The conventional modal of maintaining fiber cable cannot help engineers easily find the trouble of the fiber cable, and not easily solve the problem, which afects the normal communication and the economy is damaged greatly.So the fiber cable should be monitored and inspected instantly.It is im portant to predict or find the hidden trouble, shorten the time of abnormal state of fiber cable.This issue is raised by the Jilin Provincial Bureau of Telecommunications Transmission project's. This topic used to monitor fiber optic cable at home and abroad advanced technology to design a Web GIs-based fiber-optic cable monitoring system. System architecture using browser / server (B / S) model development, using three-tier structure: the optical fiber monitoring system is divided into stations, regional monitoring centers, with a total of three levels of monitoring center. By monitoring a dedicated multi-channel optical power meter, OTDR equipment, optical switches combine to achieve the monitoring of fiber optic cable. Preparation of fiber of this system supports the monitoring and on-line monitoring. Software of GIs map database SuperMapIS, and ASP, XML was used for system development.The system employs some first-class GISt echnology,including alarming,te sting,controlling database and operation, and combines the monitoring and maintenance comprehensively.By monitoring the fiber cable instantly, the system can predict the problem of fiber cable in time,can orientate the position of the p roblem( in fiber cable),and can shorten the time of solving the trouble economically. System features include: base stations information collection, production and realization of the maticmaps to print, the base station in real time alarm status display, base stations data analysis, statistics and analysis of the problem of base stations. In short, the system will not only solve the current optical fiber monitoring system deficiencies but convenient to the user. This system will play a positive role in developing the monitoring system of fiber optic cable.Telecom Transmission Bureau of Jilin Province belongs to Jilin branch of China Netcom Communications Group Corporation. It is mainly responsible for maintenance and management within the national long-distance communications network and local network communication lines, providing high-quality circuit for fixed telephone, data communication, mobile communication, radio and television communication. Within the jurisdiction of Telecom Transmission Bureau of Jilin Province, there are nine regional transmission Bureau which are Changchun, Jilin, Yanbian, Siping, Tonghua, Bacheng, Liaoyuan, Songyuan and Baishan,52 maintenance stations and 252 vehicles ,980 maintenance instruments.It has became an most experienced maintenance enterprise through so many years. Up to the beginning of the year 2010 ,it responsible for maintaining and managing 9200 kilometers national and provincial trunk optical cable sheath, 90000 kilometers local network cable sheath, 6000 mobile stations and 2800 towers.It is the most professional communication maintaining enterprise which has advanced technique in our province.Faced with such a huge communication network of 102000 kilometers, based on Bureau of Jilin Province, telecommunications transmission network operators to save costs, the rational allocation of resources, optimization and adjustment of network structure, improve network resource utilization, improve the level of operation and maintenance and office efficiency, and Changchun Jincheng Communication Co., Ltd. co-developed transport network resource management system, which is based platform combines GIS platform architecture, using B / S mode to achieve, the objective world of reality The wide range of geographic information resources and resource characteristics describe the properties of the data collection, storage, management, computing, analysis, query, statistics and other functions of the technology systems. It will target spatial geographic location and associated attributes the organic integration of spatial and attribute data from a geographic reality in terms of resource object query, retrieval, statistics and analysis, and results to the image, expressed in visual form, for maintenance, analysis, provide important support for decision-making platform for long-distance transmission line maintenance network infrastructure to an integrated management of resources in the province's trunk transmission network equipment, a variety of graphical information / non-graphic information and Location information on equipment resources database system. Of advanced Internet technology, computer and communication technology applications into the enterprise management to better support the telecommunications transmission maintenance.Through the use of this system, we can clearly grasp the distribution of resources for enterprises has facilitated the maintenance work. Jing Yong fault location, compression of the barrier took to establish a GIS-based long-distance optical-fiber telecommunications computer management system based on the actual geographical topographic map as the background layer. Long-distance optical cable lines layer, according to the actual fiber direction, superimposed on the geographic layers and to use the database for resource management, then even non-professional long-distance optical cable lines maintenance personnel may also be through a unified system platform within their jurisdictions Quick View range of fiber optic cable into and accurately locate cable fault risk of hidden places, based on GPS positioning, quickly and accurately determine where failure occurred, to facilitate maintenance personnel quickly reach failure occurred, and greater maintenance of quality.