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Broad-Band Integrated Optical Electric Field Sensor Using Reflection Mach-Zehnder Waveguide Modulator
Authors:Jiahong Zhang  Zhengang Zhao  Chuan Li  Yingna Li
Affiliation:Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, China
Abstract:A lithium niobate (LiNbO3) broad-band photonic sensor using reflection-type Mach-Zehnder optical waveguide modulator has been designed, fabricated, and experimentally demonstrated. The bare chip size of the sensor is microminiaturized as small as 20×5×0.5 mm3. The sensor has a wide band frequency response from 10 kHz to 20 GHz with variation less than ± 5 dB. The sensor system shows better linear characteristic from 100 mV/m to 700 V/m, and the sensitivity is 33 mV/m. Besides, the nanosecond EMP with intensity of 30 kV/m has been measured in the time domain.
Keywords:Electric field sensor  integrated optical waveguide  Lithium niobate (LiNbO3)  Mach-Zehnder interferometer (MZI)  reflective film
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