研究了用于测量电力系统电流的光学电流传感器系统 ,用矩阵光学方法建立了既具有旋光效应又具有线性双折射效应的光学电流传感器系统的数学模型 ,分析了线性双折射效应对光学电流传感器在灵敏度、线性度、稳定性等方面的影响。从而说明 :线性双折射效应是限制光学电流传感器实用化的关键因素。文中提供了一些被证明是行之有效的解决线性双折射问题的方法 The optical current sensor system for measuring the power system current is studied. The mathematical model of the optical current sensor system with both the optical rotation effect and the linear birefringence effect is established by the matrix optics method. The effects of the linear birefringence effect on the optical current sensor Sensitivity, linearity, stability and other aspects of the impact. This shows that the linear birefringence effect is the key factor to limit the practical application of optical current sensor. The article provides some proven solutions to the problem of linear birefringence