标准摘要
[中文适用范围]： IEC 60793 的这一部分定义了相位拍长@和群拍长的测试方法。这两个参数的定义不同，并且根据保偏 (PM) 光纤的类型会给出不同的结果。相位拍长是光纤保持高消光比能力的相关参数。附件 A 和 B 中有更详细的描述。 [外文原描述]： IEC 60793-1-60:2017 defines test methods for both the phase beat length, and the group beat length. These two parameters are defined differently, and will give different results depending on the type of polarization-maintaining (PM) fibre. The phase beat length is the relevant parameter for the fibres ability to maintain a high extinction ratio. This is described in more details in Annexes A and B.
英文名称Optical fibres - Part 1-60: Measurement methods and test procedures - Beat length