title: Optically compensated dual-polarization interferometric fiber-optic gyroscope.
abstract: We first introduce optical compensation into the field of interferometric fiber-optic gyroscopes (IFOGs), using the opposite polarity of the disturbance between two orthogonal polarization states to suppress polarization-fluctuation-induced noise. A dual-polarized IFOG, in which the fast and slow axes of polarization-maintaining fiber work simultaneously, is implemented and tested. Interference signals of the two axes are added to achieve optical compensation. Experiments show that the IFOG's sensitivity is effectively enhanced in compensated output: all Allan variance indices are improved, among which bias instability is reduced from 0.335 and 0.227 deg/h(fast and slow axes output, respectively) to 0.061 deg/h.
authors: State Key Laboratory of Advanced Optical Communication Systems & Networks, Department of Electronics, Peking University, Beijing 100871, China. pkuidioteque@gmail.com
authors: Yi
authors: Y
authors: Yang
authors: Zinan
authors: Z
authors: Wang
authors: Zhengbin
authors: Z
authors: Li