全保偏结构的光纤偏振耦合测试系统  

Testing System of Fiber Polarization Coupling Based on Polarization Maintaining Structure

作　　者：林惠祖[1] 姚琼[1] 胡永明[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,湖南长沙410073

出　　处：《中国激光》2010年第7期1794-1799,共6页Chinese Journal of Lasers

摘　　要：在对白光干涉仪及白光干涉法偏振耦合(PC)测试原理进行分析的基础上,设计搭建基于白光干涉法的全保偏光纤结构的迈克耳孙(Michelson)干涉仪偏振耦合测试系统,实现对保偏光纤(PMF)偏振耦合的检测,并进行了单耦合点和多耦合点测试实验,耦合系数探测灵敏度可达70 dB,得到较好的实验结果,验证了白光光纤Michelson干涉法偏振耦合测试的可行性。最后,使用超辐射发光二极管(SLD)光源、放大自发辐射(ASE)光源和掺铒光纤放大器(EDFA)光源对小耦合系数的保偏光纤偏振的耦合系数进行测量,分别得到0.36%,1.8%和2.5%的测量误差,验证了系统的精确性。By theoretically analysing white-light interferometer and the testing principle of polarization coupling（PC） in polarization maintaining fiber（PMF） based on white-light interferometer,a fiber Michelson interferometer testing system of polarization coupling in polarization maintaining fiber based on white-light interferometer is designed.Testing experiments of polarization coupling in PMF are made and a good result of 70 dB detection sensitivity is obtained.The feasibility and veracity of polarization coupling testing based on white-light fiber Michelson interferometer are validated.Finally,a small PMF coupling coefficient is tested using different light sources including super luminescent diode（SLD）,amplified spontaneous emission（ASE） and erbium-doped fiber amplifier（EDFA）.Then we get the measurement error of 0.36%,1.8% and 2.5% respectively,which verify the accuracy of the testing system.

关 键 词：光纤光学 保偏光纤 偏振耦合 光纤白光干涉仪 

分 类 号：TN253[电子电信—物理电子学] O436.3[机械工程—光学工程]