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 of π/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.