A fiber optic voltage sensor based on Bi12Ti020 crystal is described. The use of a special back-reflecting prism as a phase~ retarding element is shown to improve the temperature stability of the sensor. A comparison between the temperature properties of the glass back-reflecting prism and that of a quarter-wave plate is derived. The sensor demonstrates temperature stability of ±1.5% from -20°C to 60°C and sensitivity of 0.145% per IV RMS at 850 nm without using an additional temperature control channel.
© 1999 Optical Society of AmericaPDF Article