An Overview of Optical Voltage Sensor Based on Pockels Effect

This paper presents a thorough review of optical voltage sensors (OVS) based on Pockels effect which contain many design schemes over the last decades. The principle and optical circuit of each scheme are described respectively, such as Integrated-optic Pockels cell, multi-segment OVS, quasi-reciprocal reflective OVS, dual-crystal OVS and OVS with special optical fiber. The main strengths and weaknesses in every scheme are analyzed. Finally, we summarized the remaining problems in OVS and the future research direction as well to improve the performance of OVS based on Pockels effect.