法拉第镜式光学电流互感器原理  

Principles of Faraday mirror-typed optical current transformers

作　　者：王政平[1] 康崇[1] 黄宗军[1] 张雪原[1] 

机构地区：[1]哈尔滨工程大学理学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2005年第3期398-401,共4页Journal of Harbin Engineering University

基　　金：哈尔滨工程大学基础研究基金资助项目(HEUF04015).

摘　　要：提出了利用法拉第镜构成的具有互易传感光路的法拉第镜式光学电流互感器方案,以抵消块状玻璃传感头中线性双折射的影响,并使传感信号加倍,从而提高系统的灵敏度和温度稳定性;分析了该系统的工作原理,对输出光偏振态进行了仿真,并与单层介质膜方案进行了对比;结果显示该方案对输出光偏振态的退化有很好的抑制作用;这对于改进现有块状玻璃电流互感器的性能、开发实用型光学电流互感器具有一定的参考意义.Utilizing a Faraday rotation mirror, a Faraday rotation mirror-typed OCT design with reciprocal optical paths is proposed to overcome the effects of linear birefringence inside the bulk glass current sensing head, multiply the sensing signal, and improve the sensitivity and the temperature stability of the system. The theoretical analysis of the working principle, the simulation of the polarization state of the output light and the comparison between it and the OCT with PPTR layers are presented. The results show that this design has a good restraining effect on the degeneration of the polarization state of the output light, which has certain reference significance on the performance improvement of the present bulk glass OCT, and the development of practical OCT.

关 键 词：光学电流互感器 法拉第镜 线性双折射 琼斯矩阵 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]