集成马赫曾德型光波导工频强电场传感器  

Integrated Optical Waveguide Mach-Zehnder Interferometer Power Frequency Intensive Electric Field Sensor

作　　者：李佳文 张家洪 许晓平[1] 赵振刚 李川 LI Jia-wen;ZHANG Jia-hong;XU Xiao-ping;ZHAO Zhen-gang;LI Chuan(Faculty of Automation,College of Information Engineering and Automation,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学信息工程与自动化学院自动化系

出　　处：《光子学报》2019年第9期42-49,共8页Acta Photonica Sinica

基　　金：国家自然科学基金(Nos.61765009,51667011,51567013);云南省应用基础研究项目(No.2018FB106)~~

摘　　要：利用集成光学技术设计并研制了一种时域测量电力系统中工频强电场的传感器,体积为80 mm×18 mm×7.5 mm.采用调谐光源波长的方法补偿环境变化带来的工作点漂移,形成π/2的静态工作点,从而使传感器稳定地工作在线性区.理论分析了一种带有电极对的集成电光工频电场传感器.根据国标GB/T12720-1991建立了工频电场测试系统,对传感器的时域动态范围进行了测试.结果表明:传感器时域可测电场范围为0.35~125 kV/m,线性相关系数为0.997,线性动态范围达51 dB,适合用于工频强电场测量.For measurement of intensive power frequency electric field,an asymmetric optical waveguide Mach-Zehnder interferometer based sensor was designed and fabricated with size of 80 mm×18 mm×7.5 mm.By tuning wavelength of the laser source,the drift of the working point caused by the environmental change can be compensated,and a static working point ofπ/2 is formed,which results the sensor working stably in the linear transmission point.An integrated electro-optic power frequency electric field sensor with shieling electrode was theoretically analyzed.According to the national standard GB/T12720-1991,a power frequency electric field test system was established,and the time domain dynamic range of the sensor was measured.Experiment results show that the sensor has a linear correlation coefficient of 0.997 from 0.35 kV/m to 125 kV/m,which is suitable for power frequency electric field measurement.

关 键 词：集成光学 电场测量 非对称马赫曾德干涉仪 屏蔽电极 工作点 光波导传感器 时域分析 

分 类 号：TM935[电气工程—电力电子与电力传动]