METHOD OF PHASE MODULATION IN CIRCULAR INTERFEROMETER OF FIBER-OPTIC GYROSCOPE

摘要

FIELD: fiber optics; designing fiber-optic gyroscopes and other fiber sensors on base of circular optic-fiber interferometer. SUBSTANCE: circular interferometer uses auxiliary phase modulation in form of pulse succession of phase difference of beams of circular interferometer at amplitudes ±(pi-DELTA) and ±(pi+DELTA) rad formed by supply of stepped saw-tooth voltage pulses to phase modulator whose parameters are defined by figures m and n, where m and n may have any integer positive nonzero magnitudes and DELTA is selected within range 0,05pi rad to <=DELTA<=0,95pi rad; DELTA may have discrete series of magnitudes rad but m>=2. in this case. EFFECT: enhanced sensitivity of fiber-optic gyroscope. 8 dwg