An Optical AC Voltage Sensor Based on the Transverse Pockels Effect

Abstract

This paper introduces an optical AC voltage sensor based on the transverse Pockels effect. The sensor utilizes a bulk Bi4Ge3O12 (BGO) crystal as the sensing element. The measurement principle has been described and prototype of the sensor has been constructed and evaluated. Good linearity and accuracy performance was obtained for AC voltage measurement. The proposed sensor can be thus applied to high AC voltage measurements in the electric power industry.

Keywords

• optical voltage sensor
• electro-optical crystal
• Bi4Ge3O12
• transverse Pockels effect