Bias of a resonator fiber optic gyro composed of apolarization-maintaining fiber ring resonator with the photoinducedbirefringent grating

摘要

A theoretical study of the polarization-fluctuation induced biasof an resonator fiber optic gyro (R-FOG), which employs apolarization-maintaining fiber ring resonator with a photoinducedbirefringent grating, is presented. The polarization conversion due tothe photoinduced birefringent grating can stabilize the resonatoroutput, which result in the reduction of the bias in the R-FOG output.The influences of the parameters, such as the fluctuation of the inputpolarization, the resonator finesse, and the photoinduced index changeof the dielectric tensor, on the bias of the gyro-output have beeninvestigated. Our results show that with the help of a photoinducedbirefringent grating the bias of the gyro-output can be limited in theorder of 10-7 rad/s, a typical specification for theaircraft-navigation