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对应用相干OTDR (opticaltime domainreflectometer ,光时域反射仪 )于实用的海底光缆在线监测问题进行了讨论 ,对相干OTDR的技术作了论述 ,并就应用相干OTDR对海缆监测时 ,对监控信道性能进行了分析。最后给出了对海缆出一些故障时COTDR的计算机仿真探测结果。
This paper discusses the practical problems of on-shore optical fiber cable monitoring based on optical time domain reflectometer (OTDR), and discusses the technology of coherent OTDR. In the case of using coherent OTDR to monitor the submarine cable, Analyzed. Finally, the computer simulation results of COTDR are given when some faults occur on the submarine cable.