Abstract

A phase-drift compensator is needed for optical fiber interferometric sensors to correct for normal environmental effects such as temperature and air-current fluctuations.¹ Previously, piezeoelectric PZT compensators using ~ 10 meters of fiber have been reported.^1,2 Light weight piezoelectric PVF₂ material has been found to have large phase shifting capability (~ 4 radians/V-m) in a fiber interferometer.³ Taking advantage of this property, a PVF₂ compensator using modest length of fiber (60 cm) has been successfully implemented for the first time.

© 1982 Optical Society of America