基于OTDR和光功率测试的光纤故障监测应用方法

Based on OTDR and Light Power Test of Fiber Optic Fault Monitoring Application

摘要:

为了降低光纤光缆故障率和缩短光缆网络故障诊断时间,提出了一种基于光功率测试和光时域反射仪的光纤故障监测方法；利用光功率测试技术对光缆性能进行实时监控并预警光缆故障；分析光纤功率衰减的原因,计算得到光缆修理增加的长度,设计了修正故障地点的算法；当光缆网络发生故障时,利用光时域反射仪测试故障位置,并利用误差检测算法对电缆衰减进行分析排除,对故障地点进行故障位置修正以便快速抢修；结果表明,该方法可以降低光缆网络故障率,在故障定位中可以提高光缆故障定位的精度,计算的故障位置与实际故障位置的误差不超过10 m,可以进行实时快速的维修,对于运营时间较长的光缆网络的效果更明显,具有较好的应用价值。

Abstract:

In order to reduce the fiber optic cable and shortening the time of cable network fault diagnosis, failure rate is put forward based on the optical power test of fiber optic fault monitoring method and optical time domain reflectometer. Using the optical power measurement technology on fiber optic cable performance real-time monitoring and early warning cable fault; Analysis of the causes involved in power attenuation of optical fiber, the length of the cable repair is calculated to increase, design the correction of fault location algorithms; Failure occurs when the cable network, using the optical time domain reflectometer test fault location, and use the analysis of cable attenuation rule out error detection algorithm, fault location correction to fault location for quick repair. Results show that the method can reduce the cable network, the failure rate in the fault location can improve the precision of fiber optic cable fault location, fault location of the calculation and the actual fault location error is not more than 10 m, real-time fast repair, can run for a considerable time cable network effect is more obvious, has good application value.