标准摘要
[中文适用范围]： IEC 60793 的这一部分规定了测量无涂层光纤几何特性的统一要求。无涂层光纤的几何形状直接影响拼接@连接器和布线，因此是需要仔细规范@质量控制@并因此进行测量的基本参数。 [外文原描述]： IEC 60793-1-20:2014 establishes uniform requirements for measuring the geometrical characteristics of uncoated optical fibres. The geometry of uncoated optical fibres directly affect splicing, connectorization and cabling and so are fundamental parameters requiring careful specification, quality control, and thus measurement. This second edition cancels and replaces the first edition, published in 2001, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - the reference test method for all fibre types is changed to the video grey scale transmitted near field method from the refracted near field method; - the test lengths for all fibre types are now to be specified in the fibre's detail specification; - the core illumination wavelength for all multimode fibre types may now to be specified in the fibre's detail specification although defaults are given; - the core k-factor (decision level) is now to be specified in the detail specification for all multimode fibre types; - this edition is substantially more specific in describing the measurement; - data reduction and transformation is fully described; - the data reduction methodology for both refracted near-field and transmitted near-field methods are now unified and consistent. Keywords: measuring the geometrical characteristics of uncoated optical fibres The contents of the corrigendum of March 2016 have been included in this copy.
英文名称Optical fibres - Part 1-20: Measurement methods and test procedures - Fibre geometry