光纤 第 2-10 部分：产品规格 A1 类多模光纤的分规范（7.0 版）

[中文适用范围]： “IEC 60793的这一部分适用于光纤子类别A1-OM1@ A1-OM2@ A1-OM3@ A1-OM4@ A1-OM5@和A1d。这些光纤用于或可以并入信息传输设备和光缆。子类别 A1-OM2@ A1-OM3@ A1-OM4 和 A1-OM5 适用于四个带宽等级的 50/125 分级折射率光纤。每个带宽等级都针对两个宏弯损耗级别进行定义通过“a”或“b”后缀区分的性能。带有后缀“a”的子类别指定为满足传统的宏弯损耗性能水平。带有后缀“b”的子类别指定以满足增强的宏弯损耗（即更低的损耗）性能水平。子类别 A1-OM5 指定支持 850 nm 至 950 nm 附近的单波长或多波长传输系统。尽管没有规范指定@涵盖此的带宽信息波长范围还包括 A1-OM3 和 A1-OM4。子类别 A1-OM1 适用于 62@5/125 ??渐变折射率光纤及其子类A1d适用于100/140??渐变折射率光纤。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； ？适用于标准规范附录 A 至 D 中定义的各个光纤子类别和型号@或特定应用@的特殊要求。表 1 显示了本文件中使用的 IEC A1 多模光纤名称与所使用的名称之间的交叉参考IEC 60793-2-10:2017。该表还参考了本文件中 A1 子类多模光纤的规范性附录 A@ B 和 C，其中包含详细规范。” [外文原描述]： IEC 60793-2-10:2019 is applicable to optical fibre sub-categories A1-OM1, A1-OM2, A1-OM3, A1-OM4, A1-OM5, and A1d. These fibres are used or can be incorporated in information transmission equipment and optical fibre cables. Sub-categories A1-OM2, A1-OM3, A1-OM4 and A1-OM5 apply to 50/125 µm graded index fibre in four bandwidth grades. Each of these bandwidth grades is defined for two levels of macrobend loss performance that are distinguished by "a" or "b" suffix. Those sub-categories with suffix "a" are specified to meet traditional macrobend loss performance levels. Those sub-categories with suffix "b" are specified to meet enhanced macrobend loss (i.e. lower loss) performance levels. Sub-category A1-OM5 is specified to support single wavelength or multi-wavelength transmission systems in the vicinity of 850 nm to 950 nm. Although not normatively specified, bandwidth information covering this wavelength range is also included for A1-OM3 and A1-OM4. Sub-category A1-OM1 applies to 62,5/125 µm graded index fibre and sub-category A1d applies to 100/140 µm 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 A to D. This seventh edition cancels and replaces the sixth edition published in 2017. This edition constitutes a technical revision. This edition includes the following significant change with respect to the previous edition: revision of the naming convention for A1 multimode fibres, which better matches with those found in ISO/IEC standards. These changes are outlined in the scope of this document along with a cross reference table for the new names. Keywords: optical fibre sub-categories A1-OM1, A1-OM2, A1-OM3, A1-OM4, A1-OM5, and A1d