Theoretical and experimental investigations of a closed-loop fiber-optic gyroscope are reported. Phase nulling is accomplished by applying a sawtooth modulation to an integrated-optic phase modulator located at one side of the sensing loop. The frequency of the phase modulation is proportional to the rotation rate, thus permitting a digital readout. The influence of a finite flyback period on the scale factor is investigated.
© 1985 Optical Society of America
Original Manuscript: December 6, 1984
Manuscript Accepted: March 8, 1985
Published: June 1, 1985
A. Ebberg and G. Schiffner, "Closed-loop fiber-optic gyroscope with a sawtooth phase-modulated feedback," Opt. Lett. 10, 300-302 (1985)