Intensity-type fiber optic electric current sensor

Abstract

Simple, rugged intensity type fiber-optic vibration sensors have been developed and pre- production prototypes are being evaluated. The transduction element consists of a pair of multimode optical fibers, one mounted on a cantilever reed, the second on a fixed anvil. At frequencies well below the reed's resonant frequency, light coupled from one fiber to the other is directly proportional to the acceleration. The basic operating characteristics of the sensors, detailed laboratory test results, and preliminary field data are presented.© (1991) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.