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讨论了单模光纤双折射对电流传感的影响。对光纤电流传感器的一种光纤绕法进行 了理论分析，这种绕法能有效地降低传感头处引进的双折射。其结论不但解释了等效Ｖｅｒｄｅｔ常数下降和系统的非线性现象，而且给出了设计不同用途的光纤电流传感器的 理论依据。还描述了系统装置、调整方法及试验结果。
The effect of single-mode fiber birefringence on current sensing is discussed. An optical fiber winding method of fiber optic current sensor is theoretically analyzed. This winding method can effectively reduce the birefringence introduced at the sensor head. The conclusion not only explains the decrease of equivalent Verdet constant and the non-linearity of the system, but also gives the theoretical basis for designing optical fiber current sensors with different uses. Also describes the system installation, adjustment methods and test results.