纤维光学互连器件和无源器件 基本试验和测量程序 第3-55部分：检查和测量 偏振保持无源器件的偏振消光比和键位精度

Fibre optic interconnecting devices and passive components—Basic test and measurement procedures—Part 3-55: Examinations and measurements—Polarisation extinction ratio and keying accuracy of polarisation maintaining, passive, optical components