从极化角度对熊猫型单模保偏光纤的特性进行了深入研究，并应用光弹效应理论设计研制了单模保偏光纤快慢轴定向测试系统，通过采用高精度压共和独特角度微调机构，使快侵蚀定向精度达±0.125度.最后对单模熊猫型保偏光纤进打了实际测试，结果与理论计算吻合较好. From the perspective of polarization, the characteristics of Panda polarization maintaining fiber are deeply studied. The single-mode polarization maintaining fiber orientation measurement system is designed and developed by using the theory of photoelasticity. By using the high-precision pressure-sharing and unique angle adjustment mechanism, So that the fast erosion orientation accuracy of ± 0.125 degrees. Finally, the single-mode panda-type polarization-maintaining optical fiber into the actual test, the results agree well with the theoretical calculation.