Theoretic study of improving the sensitivity of fiber optic gyroscope using slow light

With the spectral hole-burning effect resulting from coherent population oscillation in the homogeneously broadened material, the ultraslow light propagation phenomenon is used at room temperature in a fiber. One-dimensional wave equation for envelopes light propagation is derived. We present an electronic circuit which simulates wave propagation in dispersive media. Fiber optic gyroscope which improves structure using slow light technique was designed and its principles analyzed. In a new optic gyroscope that allows relative motion between fiber medium and source, detector, dispersive drag coefficient can influence the Sagnac fringe shift. Principle is analyzed of gyroscope based on special relativity and Doppler effect. The structure of fiber optic gyroscope could increase scale factor 10^7-8 times. The detection of travel-time difference between two counter-propagating light could obtain angular velocity.