PROBLEM TO BE SOLVED: To provide a system for resonator fiber optic gyroscope intensity modulation control which achieve high speed, low loss and low price.SOLUTION: A method for controlling intensity modulation in a resonator fiber optic gyroscope (RFOG) includes the steps of: generating an intensity modulation error signal by demodulating digital samples of a light beam using a sinusoidal reference generated at a resonance detection modulation frequency; producing a sinusoidal feedback control signal from the intensity modulation error signal; and driving an intensity modulator with the sinusoidal feedback control signal, where the intensity modulator cancels residual intensity modulation from the light beam.
SYSTEM AND METHOD FOR RESONATOR FIBER OPTIC GYROSCOPE INTENSITY MODULATION CONTROL