标准摘要
[中文适用范围]： 本部分的 IEC 61753 标准包含了对非波长选择性分支器件 (NWBD) 所需满足的最小初始测试和测量要求及严重程度，以便将其分类为符合本标准要求。这些要求涵盖用于 IEC 类别 U 环境（非受控环境）的平衡双向非连接器化单模 1×N 和 2×N 非波长选择性分支器件（N 为分支端口数），特别是（但不限于）用于 PON 应用。对于平衡 NWBD，考虑了两种衰减和均匀性性能类别：A 类（高端类别），满足更严格的要求（即用于扩展范围 PON 应用）；B 类（标准类别），用于标准应用（即用于正常范围 PON 应用）。这些要求也涵盖不平衡、双向、非连接器化、单模、非波长选择性分支器件；然而，不平衡分支器件的规格仅限于 1×2 和 2×2 器件，因为它们是最常用的。 [外文原描述]： IEC 61753-031-3:2014 contains the minimum initial tests and measurement requirements and severities which a non-wavelength selective branching device (NWBD) should satisfy in order to be categorized as meeting the requirements of this standard. The requirements cover balanced bidirectional non-connectorized single-mode 1xN and 2xN non-wavelength-selective branching devices for use in an IEC category U environment (N is the number of branching ports), especially but not exclusively used for PON application. For balanced NWBD two attenuation and uniformity performance classes are considered: - class A (premium class) which meets more restrictive requirements (i.e. for extended reach PON application) and - class B (standard class) for standard application (i.e. for normal reach PON application). The requirements also cover unbalanced, bidirectional, non-connectorized, single-mode, non-wavelength-selective branching devices; however, the specifications of unbalanced branching devices are limited to 1 x 2 and 2 x 2 devices because they are the most commonly used. This second edition of IEC 61753-031-3 cancels and replaces the first edition published in 2009 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - an updated and extended scope to reflect an introduction of two attenuation and uniformity performance classes for balanced NWBD instead of branching device technologies on the market; - an updated list of normative references; - a more simplified introduction to the two types of spectral bands; - Clause 5, Performance requirements, has been updated and extended to reflect the introduction of two attenuation and uniformity performance classes for balanced NWBD; - simplified test items to exclude tests for damp heat (steady state) and impact for performance requirements; - Annexe A has been changed to introduce the calculated and minimum requirements for attenuation and uniformity; - Annex B has been updated to reflect revised performance requirements. Keywords: non-wavelength selective branching device (NWBD), IEC Category U environment
英文名称Fibre optic interconnecting devices and passive components - Performance standard - Part 031-3: Non-connectorized single-mode 1×N and 2×N non-wavelength-selective branching devices for Category U - Uncontrolled environment