Ring resonator gyro

Details Ring resonator gyro Ring resonator gyro

1990-06-21

1992-08-25

Willis, Davis L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356345, G01C 1972

Patent

active

051413159

ABSTRACT:
In a ring resonator gyro the CW and CCW beams are modulated to provide each with a spectrum including a carrier and an upper and a lower side band. The upper side band of one beam is kept at a resonance by a path length control loop 24 and the upper side band of the other beam is kept at a resonance by a rate control loop 40.

REFERENCES:
patent: 4429573 (1984-02-01), Walker
patent: 4776700 (1988-10-01), Frigo
patent: 4815851 (1989-03-01), Soohoo
patent: 4825261 (1989-04-01), Schroeder
G. A. Sanders, et al., "Evaluation of Polarization Maintaining Fiber Resonator for Rotation Sensing Applications", Optical Fiber Sensors, 1988 Technical Digest Series, vol. 2, part 2, pp. 409-412, Jan. 1988.
Mark A. Lorenz, et al., "Gas Laser Frequency Control for Passive Cavity Ring Gyros", Journal of Guidance, Control & Dynamics, vol. 11, No. 1, pp. 66-71, Jan./Feb. 1988.

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