Acta Photonica Sinica, Volume. 48, Issue 9, 913001(2019)
Integrated Optical Waveguide MachZehnder Interferometer Power Frequency Intensive Electric Field Sensor
For measurement of intensive power frequency electric field, an asymmetric optical waveguide MachZehnder 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 electrooptic power frequency electric field sensor with shieling electrode was theoretically analyzed. According to the national standard GB/T127201991, 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.
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LI Jiawen, ZHANG Jiahong, XU Xiaoping, ZHAO Zhengang, LI Chuan. Integrated Optical Waveguide MachZehnder Interferometer Power Frequency Intensive Electric Field Sensor[J]. Acta Photonica Sinica, 2019, 48(9): 913001
Received: May. 25, 2019
Accepted: --
Published Online: Oct. 12, 2019
The Author Email: Jiawen LI (876730140@qq.com)