法拉第旋光器温度特性对无源解调全光纤电流互感器的影响  

Effect of Temperature Characteristic of Faraday Rotator on Passively Demodulated All-Optical Fiber Current Transformers

作　　者：王玥坤[1] 王政平[1] 孙帅[1] 

机构地区：[1]哈尔滨工程大学理学院,黑龙江省哈尔滨市150001

出　　处：《电网技术》2013年第1期206-210,共5页Power System Technology

摘　　要：无源调制式光纤电流互感器在原有的In-line光纤电流互感器结构基础上加入了22.5的法拉第旋光器用以达到将信号检测的工作点移到最敏感的位置且同时提高系统的抗扰度的目的。为促进无源解调型全光纤电流互感器的实用化进程,根据制备法拉第旋光器的法拉第晶体温度特性,从理论上分析了法拉第旋光器温度特性对无源解调全光纤电流互感器温度稳定性的影响,并针对不同种温度特性各异的法拉第晶体采用数值计算的方法对法拉第旋光器温度特性对系统输出的温度稳定性的影响进行了评估。To achieve the purposes of removing the signal detecting point to the most sensitive position and improve the anti-interference performance of the system, between fiber 2/4 wave plate and conductive optical fiber of original In-line optical fiber current transformer a Faraday rotator with 22.5° deflection angle is added on to form a passively demodulated all optical fiber current transformer. To promote the practical application of passively demodulated all optical fiber current transformer, according to the temperature characteristics of Faraday crystal for the preparation of Faraday rotator the influence of temperature characteristics of Faraday rotator on temperature stability of passively demodulated all optical fiber current transformer is analyzed theoretically, and for various types of Faraday crystals with different temperature characteristics the influence of temperature characteristics of Faraday rotator on temperature stability of system output is assessed by numerical calculation.

关 键 词：光纤电流互感器 法拉第旋光器 无源解调 温度特性 法拉第效应 

分 类 号：TN253[电子电信—物理电子学]