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Fiber Optic Voltage Sensor Based on Inverse Piezoelectric Effect

The inverse piezoelectric optical fiber voltage sensor is high in optical power transmission efficiency, particularly low in bending loss, wide in dynamic range and high in capability of resisting external environmental disturbance, is capable of effectively reducing inevitable. The inverse piezoelectric optical fiber voltage sensor is high in optical power transmission efficiency, particularly low in bending loss, wide in dynamic range and high in capability of resisting external environmental disturbance, is capable of effectively reducing inevitable. The invention discloses a kind of full optical path voltage measurement system based on inverse piezoelectric effect and fiber grating, including broad band laser light source, voltage sensor reference unit, voltage sensor sensing unit, transmission fiber, photodetector and distal tip signal. The inverse piezoelectric optical fiber voltage sensor comprises a photonic crystal tail fiber light source, a circulator, a polarizer, a 45-degree fusion point, an optical phase modulator, a photonic crystal delay optical fiber loop, a 45-degree Faraday rotator, a first piezoelectric crystal, a. This paper proposes two types of fiber optic voltage sensors for high-voltage power systems, based on the inverse piezoelectric effect of quartz crystal and the photoelastic effect of single-mode fiber. The former uses the line integral of the electric field to measure high voltage (≥420kV), while.

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