This paper presents the principle of optic time domain reflectometer (OTDR) and the fault location of optic fiber cable line by OTDR.

• 介绍了光时域反射仪(OTDR)的测试原理及其对光缆线路中经常出现的光纤故障点进行了分析,并简述了用OTDR测量时应注意的问题。