本文根据白光干涉原理，研究了保偏光纤偏振色散和耦合系数的测量，保偏光纤连接时主轴夹角的调整，并获得了满意的实验结果．还对白光干涉技术在保偏光纤传感和器件方面的应用作了初步的讨论． According to the principle of white light interference, the polarization dispersion and the coupling coefficient of polarization maintaining fiber are measured, and the adjustment of the included angle of the main axis of the polarization maintaining fiber is studied. The satisfactory experimental results are also obtained. The application of white light interference technology in polarization-maintaining optical fiber sensing and devices was also discussed.