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本文介绍了OTDR测量光纤长度基本原理,对影响光纤长度准确测量因素、光纤长度准确测量基本方法进行了理述。认为光纤长度准确测量要正确设置测量参数、正确设置测量光标位置、消除光纤测试盲区;在测量光缆障碍点时,需消除光缆敷设造成的光纤长度和光缆路由长度的偏差。
This paper introduces the basic principle of measuring fiber length by OTDR, and describes the accurate measurement of fiber length and the basic method of fiber length measurement. It is considered that the accurate measurement of the fiber length should set the measurement parameters correctly, set the position of the measuring cursor correctly, and eliminate the blind spot of the optical fiber test. When measuring the obstacle of the optical cable, the deviation of the optical fiber length and the length of the optical cable route should be eliminated.