组合不同单模光纤子类别的指南

[中文适用范围]： 本文档提供了关于单模光纤互操作性的指南。给定的单模光纤类别（例如B-655）可以通过适当优化以下参数来实现不同的实现方式：模场直径（因此有效面积）、色散系数、色散曲线的斜率、电缆截止波长。这些指南指出了在计划连接以下内容时应考虑的项目：1) 相同类别的单模光纤的不同实现方式，例如B类单模光纤的不同实现方式；2) 不同子类别的单模光纤，例如B-652.B与B-655.C。参见IEC 60793-2-50了解单模光纤的属性和定义。本文档涵盖的光纤的属性和定义在表1中给出。 [外文原描述]： IEC TR 62000:2021 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC TR 62000:2021 provides guidelines concerning single-mode fibre inter-compatibility. A given category of single-mode fibre, for example B-655, can have different implementations by suitably optimising several of the following parameters: mode field diameter (hence effective area), chromatic dispersion coefficient, slope of the chromatic dispersion curve, cable cut-off wavelength. These guidelines indicate the items that are taken into account when planning to connect - different implementations of single-mode fibres of the same category, for example different implementations of Class B single-mode fibres, and - single-mode fibres of different sub-categories, for example B-652.B with B-655.C. This third edition cancels and replaces the second edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - global uniformity of terminology concerning fibre classes, categories and sub-categories throughout the document; - updating and aligning to the new naming convention of IEC 60793-2-50 for class B fibre categories and sub-categories; - updating and aligning with IEC 60793-2-50 as per supported fibre sub-categories; - additional guidelines concerning combination of fibre parameters: chromatic dispersion and slope, polarization mode dispersion; - additional guidelines concerning non-linear affects; - updating of bibliographical references.