Single-mode optical fibres for telecommunication—Part 1:Characteristics of a dispersion unshifted single-mode optical fibre
全国通信标准化技术委员会(SAC/TC 485)
GB/T 9771的本部分规定了非色散位移单模光纤（B1.1类单模光纤）的修约规则、要求和试验方法。
本部分适用于通信光缆和其他信息传输设备中使用的B1.1类单模光纤中的B子类。
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