Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1991-05-31
1993-08-17
Turner, Samuel A.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
G01C 1972
Patent
active
052373878
ABSTRACT:
A dual serrodyne resonator fiber optic gyroscope utilizing two positive-going or two negative-going ramp signals having a frequency difference, to track resonance frequencies of laser light traveling in two directions in a fiber optic resonator. The difference in the servo-controlled variable ramp frequencies is proportional to rotation rate and is indicative of direction of rotation.
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"Closed-Loop Fiber-Optic Gyroscope with a Sawtooth Phase-Modulated Feedback", Ebberg et al, OSA, Jun. 1985, pp. 300-302.
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Lefevae et al, "III--Principle of the Digital Phase Ramp", 1984, pp. all.
In all Fibre Ring Resonator Gyroscope Using a Low Coherence Length Source, by F. Farahi, K. Kalli and D. A. Jackson.
Honeywell Inc.
Turner Samuel A.
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