互易性光学量对FMOCT输出光偏振态的联合影响

提出了用于大电流测量的法拉第镜式光学电流互感器方案.采用琼斯矩阵分析了互易性光学量联合作用对法拉第镜式光学电流互感器输出光偏振态的影响,做了计算机仿真验证；利用椭率概念定量分析了输出偏振光的椭圆退化问题,计算了输出光椭率与互易性光学量的关系；在输出光的椭圆退化问题上与单层保偏膜式光学电流互感器方案进行了对比.结果表明,在互易性光学量联合作用的条件下,法拉第镜式光学电流互感器的输出光仍保持线偏振状态,这将改善由温度引起的互易性光学量变化对系统工作稳定性的影响.

Joint Effects of Reciprocal Optical Parameters Upon Polarization State of Output Light of FMOCT

A project of Faraday mirror-typed optical current transformer which is used in super-current measurement is proposed.Joint effects of reciprocal optical parameters upon the polarization state of output light of Faraday mirror-typed optical current transformer are analyzed by Jones Matrix.The results are simulated by computer.Elliptical degeneration of output polarization light is quantitatively analyzed by means of conception of the elliptical ratio.The relation between elliptical ratio of output light and reciprocal optical parameters is calculated.Compared with the optical current transformer with single layer polarization maintaining in the elliptical degeneration of output polarization light,the result shows that output light of Faraday mirror-typed optical current transformer is also maintain the polarization state under the condition of joint effects of reciprocal optical parameters.It will improve the influence of reciprocal optical parameters upon system stability by temperature and might have certain reference signification on the investigation of the practical optical current transformer.