title: Analysis of the Light Propagation Model of the Optical Voltage Sensor for Suppressing Unreciprocal Errors.
abstract: An improved temperature-insensitive optical voltage sensor (OVS) with a reciprocal dual-crystal sensing method is proposed. The inducing principle of OVS reciprocity degradation is expounded by taking the different temperature fields of two crystals and the axis-errors of optical components into consideration. The key parameters pertaining to the system reciprocity degeneration in the dual-crystal sensing unit are investigated in order to optimize the optical sensing model based on the Maxwell's electromagnetic theory. The influencing principle of axis-angle errors on the system nonlinearity in the Pockels phase transfer unit is analyzed. Moreover, a novel axis-angle compensation method is proposed to improve the OVS measurement precision according to the simulation results. The experiment results show that the measurement precision of OVS is superior to ±0.2% in the temperature range from -40 °C to +60 °C, which demonstrates the excellent temperature stability of the designed voltage sensing system.
authors.affiliation: Key Laboratory of Precision Opto-mechatronics Technology, Ministry of Education, School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China. lihui@buaa.edu.cn.
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.affiliation: Key Laboratory of Precision Opto-mechatronics Technology, Ministry of Education, School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China. fuzhida@buaa.edu.cn.
authors.forename: Zhida
authors.initials: Z
authors.lastname: Fu
authors.affiliation: Key Laboratory of Precision Opto-mechatronics Technology, Ministry of Education, School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China. xiaocuter@hotmail.com.
authors.forename: Liying
authors.initials: L
authors.lastname: Liu
authors.affiliation: Fujian Key Laboratory of Light Propagation and Transformation, College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China. zllin2008@gmail.com.
authors.forename: Zhili
authors.initials: Z
authors.lastname: Lin
authors.affiliation: Key Laboratory of Precision Opto-mechatronics Technology, Ministry of Education, School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China. deng1517101@buaa.edu.cn.
authors.forename: Wei
authors.initials: W
authors.lastname: Deng
authors.affiliation: Key Laboratory of Precision Opto-mechatronics Technology, Ministry of Education, School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China. fenglishuang@buaa.edu.cn.
authors.forename: Lishuang
authors.initials: L
authors.lastname: Feng
keywords: measurement accuracy; optical voltage sensor; temperature stability