BS EN 60793-1-61:2017规定了测量极化的统一要求 保偏（PM）光纤的串扰。本文给出了测量PM光纤偏振串扰的两种方法。 方法A是功率比法，它使用输出的最大值和最小值 在特定波长下的功率，方法B是使用分析的在线方法 关于庞加莱球体。每种方法的细节见第6条。通过方法A和B获得的串扰值基于不同的定义。通过方法A测量的串扰被定义为测量信号上的“平均”值 波长范围。相比之下，从方法B获得的串扰值显示“最差” 案例“串扰值。交叉参考:IEC 60068-1:2013EN 60793-1-1:2017IEC 60793-1-1:2017EN 60793-2-70:2017IEC 60793-2-70:2017EN 60068-1（IEC 60068-1:2013）以及购买本文件时可用的所有现行修订件。

BS EN 60793-1-61:2017 establishes uniform requirements for measuring the polarization crosstalk of polarization-maintaining (PM) fibres.This document gives two methods for measuring the polarization crosstalk of PM fibres. Method A is the power ratio method, which uses the maximum and minimum values of output power at a specified wavelength, and Method B is the in-line method, which uses an analysis of the Poincare sphere.Details of each method are described in Clause 6.Crosstalk values obtained by Methods A and B are based on different definitions.The crosstalk measured by Method A is defined as an "averaged" value over a measured wavelength range. In contrast, the crosstalk value obtained from Method B shows the "worst case" crosstalk value.Cross References:IEC 60068-1:2013EN 60793-1-1:2017IEC 60793-1-1:2017EN 60793-2-70:2017IEC 60793-2-70:2017EN 60068-1 (IEC 60068-1:2013) ASAll current amendments available at time of purchase are included with the purchase of this document.