单模光纤 OTDR 反向散射迹线解释指南

[中文适用范围]： IEC 62316 是一份技术报告，旨在为单模光纤反向散射迹线的解释提供指导，这些迹线是通过传统光时域反射计 (OTDR)（不包括偏振 OTDR）获得的。此外，还讨论了单向迹线情况下的反向散射功率效应。测试测量程序的完整描述可在 IEC 60793-1-40:2001 的附录 C 中找到。 [外文原描述]： IEC/TR 62316:2017 which is a Technical Report, aims to provide guidelines for the interpretation of backscattering traces, as obtained by traditional optical time domain reflectometers (OTDRs) – not including polarization OTDRs – for single-mode fibres. Also, backscattered power effects are discussed in case of unidirectional trace. Full description of the test measurement procedure can be found in Annex C of IEC 60793-1-40:2001. This third edition cancels and replaces the second edition published in 2007. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a. the scope has been extended to include single-mode fibres; b. backscattered power effects are discussed in case of unidirectional trace, including so-called losers and gainers. c. example of apparent splice loss evaluation for unidirectional OTDR measurements has been added: d. description of launch and tail cords have been added; e. figures have been improved.