非线性系数测量方法应用指南

[中文适用范围]： 本文件为在1550 nm区域对B类单模光纤（参见IEC 60793-2-50）的非线性系数进行统一测量提供了指南。非线性系数的测量用于表征特定单模光纤设计，以便相对于功率水平和源自非线性光学行为的失真或噪声效应进行系统设计。 [外文原描述]： IEC TR 62285:2023 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 62285:2023 which is a Technical Report, provides guidelines for uniform measurements of the nonlinear coefficient of class B single-mode fibres (see IEC 60793-2-50) in the 1 550 nm region. Measurements of the nonlinear coefficient are used to characterise specific single-mode fibre designs for the purpose of system design relative to power levels and distortion or noise effects derived from the nonlinear optical behaviour. This third edition cancels and replaces the second edition published in 2005. It constitutes a technical revision. This edition includes the following signification technical changes with respect to the previous revision: a) change fibre type of pigtail to B-652.D fibre or fibre of same type with the fibre under test; b) modifications on Figure A.1 and Formulas (A.3), (A.4); c) add example values and recommended method A test conditions for B-G.654.E fibre, update Table C.1.