【摘要】 介绍了保偏光纤的偏振串音和h参数以及它们的相互关系。给出了高精度起偏系统和检偏系统的光路结构。对影响测试精度的各种因素进行了详细分析,并使用自制的测试系统对国内几个单位生产的保偏光纤进行了测试,得到了理想的测试结果。其中,2m长的保偏光纤的偏振串音达到了-50dB以下,其测试精度达到了国际先进水平。更多还原

【Abstract】 The polarization crosstalk and h parameter of PM fibers and their relationships are introduced. The optical structure of high precision polarization system and polarization detection system are presented. The various factors that may influence measurement precision are theoretically analyzed. By using the instrument manufactured by ourselves, several PM fibers that are made in China are measured. The test results are satisfactory. The polarization crosstalk of 2 meter long PM fibers exceeds -50dB, which is the best result in the world.更多还原