Fiber optic gyro using a pulsed light source

Details Fiber optic gyro using a pulsed light source Fiber optic gyro using a pulsed light source

1990-05-08

1991-10-08

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

050549235

ABSTRACT:
In a fiber optic gyro, the operation of a light source which generates light for input as right-handed light and left-handed light into an optical fiber coil is controlled by the ON/OFF operation of a pulse generated by a logic circuit, thereby reducing the quantity of heat generated in the light source. Preferably, a DC component eliminating circuit is provided at the preceding stage of a synchronous detector for eliminating the ON/OFF frequency component of light. More preferably, a gate circuit is provided at the output side of the synchronous detector to cut off both end portions of the synchronous detector output during the ON state of the light source, thereby removing spike noise.

REFERENCES:
patent: 4265541 (1981-05-01), Leclerc et al.
patent: 4283144 (1981-08-01), McLandrich

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