WAY TO IMPROVE THE ACCURACY OF COMPENSATION OF PARASITIC EFFECTS IN INTEGRATED-OPTICAL PHASE MODULATORS OF FIBER-OPTIC GYROSCOPES Russian patent published in 2017 - IPC G01C19/72 

FIELD: physics.

SUBSTANCE: way to improve the accuracy of compensation for parasitic effects in integrated-optical phase modulators of fiber-optic gyroscope consisting of optical radiation source, the divider of optical rays and integrated optical circuits, consisting of integrated optical phase modulator, sensitive optic coil, photodetector and electronics service unit that contains the generator voltage auxiliary modulation rays and step voltage generator interferometer. The accuracy is enhanced by the fact that an information processing algorithm comprising a first feedback loop that provides linearity of the output characteristic of the gyroscope when a stepped sawtooth voltage is applied to the phase modulator and a second feedback loop ensuring the stability of the gyro scale factor further includes a third and fourth contours feedback based on two additional phase modulators. Additional feedback loops compensate for the phase difference distortion between optical beams introduced by the main phase modulators.

EFFECT: high accuracy of the fibre-optic gyroscope.

6 cl, 16 dwg