Optical fiber interferometric rate gyro particularly adapted to

Details Optical fiber interferometric rate gyro particularly adapted to Optical fiber interferometric rate gyro particularly adapted to

1980-02-21

1982-05-11

Punter, William H.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356351, G01B 902

Patent

active

043290566

ABSTRACT:
The present patent application discloses an optical fiber interferometric rate gyro using the SAGNAC effect particularly adapted to the measurement of low rotational speeds comprising, between the radiation splitting and recombining device which directs two waves simultaneously towards the two ends of a single mode wound optical fiber and recombines the two waves emerging from the fiber after travelling in opposite directions at each of the two ends of the fiber, a splitter associated with a detector picking up a fraction of the wave emerging from the corresponding end, the speed measurement being obtained from signals from these detectors and from the signal from a detector picking up the radiation resulting from the recombination of both waves.

REFERENCES:
patent: 4259016 (1981-03-01), Schiffner
Goss et al., "Fiber Optic Rotation Sensor (FORS) Signal Detection & Processing", Opt. Engineering, Jan.--Feb. 1979, pp. 9-13.
Lee et al. "Measurement of Saturation Induced Optical Non Reciprocity in a Ring Laser Plasma", IEEE, Je. Quantum Elec., 8-66, pp. 235-243.
Davis et al. "Techniques for Shot Noise Limited Inertial Rotation Measurement Using a Multiturn Fiber Sagnac Interferometer", SPIE vol. 157, 1978, pp. 131-136.
Ulrich et al. "Fiber--Ring Interferometer: Polarization Analysis", Optics Letters, 5-1979, pp. 152-154.

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