RAPID TURN-ON SOURCE FOR FIBER OPTIC GYROSCOPE

摘要

A light source with wavelength compensation for a fiber optic rotation senso r includes a light source to provide light for input to the fiber optic rotation sensor. A source control circuit generates a source con trol signal representative of the temperature of the lig ht 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 s ource control signal over a predetermined temperature ra nge. The source control circuit includes a temperature sensor which provides a curren t signal representative of the temperature of the light source and a buffer network for sinking the current signal and for generating a sou rce control voltage as the source control signal. A meth od for wavelength compensation of a light source for a fiber optic rotation sensor includes sensing a temperature of the light source and g enerating 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 a s a function of the compensation signal.