标准摘要
[中文适用范围]： 本部分 IEC 61280 旨在表征两种类型光源的包络通量：传输光源（通常相干且显著欠激发多模光纤的模式体积）和测量光源（非相干且激发多模光纤的大部分模式体积）。本部分 IEC 61280 规定了收集二维光纤近场灰度数据并随后将其简化为以光纤光学中心为半径的一组三个采样参数函数的一维数据的标准程序。本修订版 IEC 61280-1-4 继续履行其原始目的，即表征传输光源，从而能够准确预测 1 吉比特/秒或更高光纤数据通信系统中最小保证链路长度的数学模型。本修订版的新增内容是通过表征测量光源，提高多模光纤链路插入损耗测量的精度。估算光纤芯径不是本标准的目标。 [外文原描述]： IEC 61280-1-4:2009 sets forth a standard procedure for the collection of two-dimensional fibre optic nearfield greyscale data and subsequent reduction to one-dimensional data expressed as a set of three sampled parametric functions of radius from the fibre's optical centre. This revision of IEC 61280-1-4 continues to fulfil its original purpose, characterization of transmission light sources, which enables the accurate mathematical prediction of minimum guaranteed link length in 1 gigabit per second or greater fibre optic data communication systems. New to this revision is support for improved measurement precision of insertion loss in multimode fibre optic links through the characterization of measurement light sources.
英文名称Fibre optic communication subsystem test procedures - Part 1-4: General communication subsystems - Light source encircled flux measurement method