光学环形谐振腔的偏振分析

he resonator optic gyro (ROG) is a novel inertial rotation sensor, which uses resonance frequency change due to the Sagnac effect to measure for rotating sensing. Through research on the noise sources in the ROG, the polarization fluctuation in ring resonator has shown to be one of the dominant noise sources. This paper analyzes the polarization characteristic of light propagation in ROG. A universal model is set up, which can analyze resonance curve of polarization characteristic in ring resonator. The polarization fluctuation based on the basic element parameters of the ROG can be obtained using this model. Also how to select a ring resonator for the smallest polarization fluctuation of the ROG is presented.