温度对稀土磁光玻璃光学电流传感器特性的影响  

Temperature dependence of performance of rare earth doped magneto-optical glass for optical current transducers

作　　者：申岩[1] 林秋雁[1] 刘曌[1] 葛津铭 芦云河 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨150080 [2]国家电网北京市电力公司,北京100031

出　　处：《磁性材料及器件》2016年第1期18-21,26,共5页Journal of Magnetic Materials and Devices

基　　金：国家自然科学基金资助项目(11004040);黑龙江省自然科学基金资助项目(E201237);哈尔滨市科技局青年后备人才项目(2014RFQXJ022)

摘　　要：从温度、掺杂Tb^(3+)离子浓度和尺寸三个方面对稀土磁光玻璃的性能进行了研究。首先通过理论计算,得到温度对于稀土磁光玻璃在光学电流传感器中性能的影响,这一影响包括线性双折射和费尔德常数两方面。温度特性实验表明,温度上升引起稀土磁光玻璃线性双折射变大,光学电流传感器的磁光灵敏度降低。对不同稀土浓度的玻璃进行对比实验,发现稀土浓度的改变对磁光玻璃性能影响并不明显。不同玻璃长度特性实验表明,随着稀土玻璃长度增加,玻璃对于激励电流的响应增大。First of all, the theoretical analysis was performed on the effect of temperature on the performance of the sensing element of rare earth-doped magneto-optical glass material for optical current transducer application. The effect comprises two aspects： the linear birefringence and the Verdet constant. The rare earth-doped glass temperature characteristics were studied, and the experimental results indicate that the linear birefringence of rare earth-doped glass increases with increasing temperature, while its magneto-optical sensitivity decreases. Secondly comparative experiments on various concentrations of rare earth dopant in the glass reveales that changes in the dopant concentration have no significant effect on the performance of magneto-optical glass. Finally, experiment on different length of glass shows that the longer the magneto-optical length, the greater the response for the exciting current.

关 键 词：稀土磁光玻璃 光学电流传感器 温度特性 线性双折射 

分 类 号：TP212.13[自动化与计算机技术—检测技术与自动化装置]