Home / Standards / GB/T 9771.1-2020 GB/T 9771.1-2020 Active Single-mode optical fibres for telecommunication—Part 1: Characteristics of a dispersion unshifted single-mode optical fibre 通信用单模光纤 第1部分：非色散位移单模光纤特性 Standard Type GBT ICS 33.180.10 CCS M33 Status 现行 Issue Date 2020-06-02 Implementation 2021-01-01 Responsible Dept 工业和信息化部（通信） Drafting Unit N/A