光纤 第2-10部分：产品规格 A1 类多模光纤的分规范（6.0 版）

[中文适用范围]： “IEC 60793的本部分适用于光纤子类别A1a@、A1b@和A1d。这些光纤用于或可并入信息传输设备和光缆中。子类别A1a适用于50/125??级索引光纤。四个带宽等级被定义为模型 A1a.1@ A1a.2@ A1a.3 和 A1a.4。每个带宽等级都定义为两个级别的宏弯损耗性能，以“a”或“a”来区分“b”后缀。带后缀“a”的型号指定满足传统宏弯损耗性能水平。带后缀“b”的型号指定满足增强型宏弯损耗（即较低的损耗）性能水平。型号A1a.4支持850 nm至950 nm附近的单波长或多波长传输系统，子类别A1b适用于62@5/125 ?渐变折射率光纤，子类别A1d适用于100/140 ?其他应用包括但不限于以下内容： 短距离@ 电话中的高比特率系统@ 分配和承载数据@ 语音和/或视频服务的本地网络；本地建筑物内和建筑物间光纤安装，包括数据中心@局域网 (LAN)@存储区域网络 (SAN)@专用分支交换机 (PBX)@视频@各种复用用途@外部电话电缆设备用途@和各种相关用途。这些纤维适用三种类型的要求： ? IEC 60793-2 中定义的一般要求@； ？本文件中涵盖的 A1 类多模光纤共有的具体要求，并在第 5 条中给出； ？适用于规范性规范附件中定义的各个纤维子类别和型号@或特定应用@的特殊要求。” [外文原描述]： IEC 60793-2-10:2017 is applicable to optical fibre sub-categories A1a, A1b, and A1d. These fibres are used or can be incorporated in information transmission equipment and optical fibre cables. Sub-category A1a applies to 50/125 mm graded index fibre. Four bandwidth grades are defined as models A1a.1, A1a.2, A1a.3 and A1a.4. Each of these bandwidth grades is defined for two levels of macrobend loss performance that are distinguished by "a" or "b" suffix. Those models with suffix "a" are specified to meet traditional macrobend loss performance levels. Those models with suffix "b" are specified to meet enhanced macrobend loss (i.e. lower loss) performance levels. Model A1a.4 supports single wavelength or multi-wavelength transmission systems in the vicinity of 850 nm to 950 nm. Sub-category A1b applies to 62,5/125 mm graded index fibre and sub-category A1d applies to 100/140 mm graded index fibre. Other applications include, but are not restricted to, the following: - short reach, high bit-rate systems in telephony, distribution and local networks carrying data, voice and/or video services; - on-premises intra-building and inter-building fibre installations including data centres, local area networks (LANs), storage area networks (SANs), private branch exchanges (PBXs), video, various multiplexing uses, outside telephone cable plant use, and miscellaneous related uses. Three types of requirements apply to these fibres: - general requirements, as defined in IEC 60793-2; - specific requirements common to the category A1 multimode fibres covered in this document and which are given in Clause 5; - particular requirements applicable to individual fibre sub-categories and models, or specific applications, which are defined in the normative specification annexes. This sixth edition cancels and replaces the fifth edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: addition of model A1a.4 fibre which supports single wavelength or multi-wavelength transmission systems in the vicinity of 850 nm to 950 nm.