title: Improving thermal stability of a resonator fiber optic gyro employing a polarizing resonator.
abstract: To improve the thermal stability of a resonator fiber optic gyro (R-FOG), a transmission-type polarizing resonator by inserting two in-line polarizers in a polarization-maintaining fiber resonator with twin 90° polarization-axis rotated splices is proposed and experimentally demonstrated. The in-line polarizers attenuate the unwanted resonance by introducing high loss for the unwanted eigenstates of polarization in the resonator. The desired resonance in the resonator can keep excellent stability in a wide temperature range, thus the temperature-related polarization error in the R-FOG is dramatically suppressed. Both our numerical simulation and experimental verification are carried out, which for the first time to our best knowledge demonstrate that the open-loop output of the R-FOG is insensitive to environmental temperature variations. A bias stability below 2°/h in the temperature range of 36.2°C to 33°C is successfully demonstrated.
authors: Micro-satellite Research Center, Zhejiang University, Hangzhou 310027, China.
authors: Xuhui
authors: X
authors: Yu
authors: Huilian
authors: H
authors: Ma
authors: Zhonghe
authors: Z
authors: Jin