中国计量科学研究院最近研究建立并通过鉴定的OTDR标准和装置，采用IEC（国际电工委员会）推荐的标推光纤法。该装置原理先进，方法正确，设计合理。其技术指标达到了当前国际水平（见下表）。光时域反射计（OTDR）能实现单端非破坏性测量，通过将光脉冲单端注入被测量光纤，接 China Institute of Metrology recently studied to establish and pass the identification of OTDR standards and devices, using the IEC (International Electrotechnical Commission) recommended push fiber method. The principle of the device is advanced, the method is correct and the design is reasonable. Its technical indicators have reached the current international level (see table below). Optical Time Domain Reflectometer (OTDR) enables single-ended, non-destructive measurement by injecting a single pulse of light into the fiber being measured