Abstract

Electric-field sensors based on the integrated-optics version of the Pockels cell (IOPC) [1] have been fabricated and tested. Their high accuracies and wide bandwidths indicate that such IOPC electric-field sensors should find metering, monitoring, and protection applications in power generation, transmission, and distribution systems; as well as being useful in laboratory environments. Past work has concentrated on the linearity and frequency response of such sensors, including their ability to replicate high-speed transient impulses [2]. Here we report on measurements made in the frequency range 1 to 10,000 Hz. Fig. 1 shows the spectral content of an applied signal, including higher order harmonics, and the spectral content of the measured signal in the frequency range 1 to 2,000 Hz.

© 1996 IEEE