Chao Jiang, Jiahong Zhang, Yingna Li, Zhengang Zhao. Development of Integrated Optical Waveguide Electric Field Sensor Based on Balance Detection[J]. Laser & Optoelectronics Progress, 2021, 58(19): 1913001
- Laser & Optoelectronics Progress
- Vol. 58, Issue 19, 1913001 (2021)
Fig. 1. Electric field sensing system
Fig. 2. Basic structure of sensor
Fig. 3. Principle of balanced photodetector
Fig. 4. Amplitude-frequency characteristic graph
Fig. 5. Voltage noise spectral density curve
Fig. 6. Balanced photodetector. (a) PCB of circuit; (b) physical circuit
Fig. 7. Packaged sensor
Fig. 8. Power frequency electric field measurement. (a) Block diagram of measurement system; (b) physical drawing of measurement system
Fig. 9. Output waveform of sensor balance detection under different field intensities. (a) 0; (b) 25 V/m; (c) 33 V/m; (d) 85 V/m; (e) 3000 V/m; (f) 3285 V/m
Fig. 10. Output waveform of single-channel sensor detection under different field intensities. (a) 0; (b) 92 V/m
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Table 1. Measurement results of different types of sensors
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