Rapid turn-on source for fiber optic gyroscope

Details Rapid turn-on source for fiber optic gyroscope Rapid turn-on source for fiber optic gyroscope

G - Physics

01

C

G01C 19/72 (2006.01)

Patent

CA 2157679

A light source with wavelength compensation for a fiber optic rotation sensor includes a light source to provide light for input to the fiber optic rotation sensor. A source control circuit generates a source control signal representative of the temperature of the light source. A driver generates a drive signal as a function of the source control signal to drive the light source. One of a plurality of scale factors for the fiber optic rotation sensor is generated also as a function of the source control signal over a predetermined temperature range. The source control circuit includes a temperature sensor which provides a current signal representative of the temperature of the light source and a buffer network for sinking the current signal and for generating a source control voltage as the source control signal. A method for wavelength compensation of a light source for a fiber optic rotation sensor includes sensing a temperature of the light source and generating a source control signal representative of the temperature. A drive signal is applied to the light source as a function of the source control signal and a scale factor for the fiber optic rotation sensor is generated as a function of the compensation signal.

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