Fiber optic gyroscope balanced plural serrodyne modulators phase difference control

摘要

A phase difference controller for a rotation sensor based on a coiled optical fiber operating a dual output generator in a feedback loop to provide a pair of signals to operate a pair of frequency translating devices in the optical path with the coil. A pair of sawtooth-like signals of appropriate frequency and polarity operate the frequency translating device to provide a phase difference shift in the optical path.