All-Fiber-Optic Gyroscope With Linear Scale Factor Using Phase Detection
Abstract
Direct measurement of Sagnac phase shift from an open-loop, all-fiber-optic gyroscope using signal processing is described. The photodetector output from a phase modulated gyro is amplitude modulated at the phase modulation frequency to transpose the optical phase shift into a low frequency electronic phase shift, which is measured using a digital time interval counter. A wide dynamic range and linear scale factor are demonstrated using this approach.
- Publication:
-
Fiber optic and laser sensors II
- Pub Date:
- September 1984
- DOI:
- 10.1117/12.942681
- Bibcode:
- 1984SPIE..478..142K
- Keywords:
-
- Fiber Optics;
- Optical Gyroscopes;
- Phase Shift;
- Phase Modulation;
- Sagnac Effect;
- Signal Processing;
- Waveforms;
- Optics