纤维光学互连器件和无源器件 基本试验和测量程序 第3-40部分:检查和测量 带保偏光纤尾纤连接器的消光比
Fibre optic interconnecting devices and passivecomponents--Basic test and measurement procedures--Part 3-40:Examinations and measurements--Extinction ratio of a polarization maintaining(pm)fibre pigtailed connector