Automated suppression of polarization-fluctuation in resonator fiber optic gyro by a resonator with twin 90-degree polarization-axis rotated splices: theoretical analysis

Xijing Wang; Zuyuan He; Kazuo Hotate

doi:10.1117/12.866320

8 September 2010 Automated suppression of polarization-fluctuation in resonator fiber optic gyro by a resonator with twin 90° polarization-axis rotated splices: theoretical analysis

Xijing Wang, Zuyuan He, Kazuo Hotate

Author Affiliations +

Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 76533H (2010) https://doi.org/10.1117/12.866320
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal

Abstract

We present the theoretical analysis on the effectiveness of the polarization-fluctuation suppression feedback control in resonator fiber optic gyro (R-FOG) with twin 90° polarization-axis rotated splices. Previously reported experimental results have shown that this feedback scheme is effective in improving the long-term bias stability of R-FOG by keeping the length difference of the fiber segments between two 90° polarization-axis rotated splicing points (Δl) to a half of the beat-length of the polarization maintaining fiber (B/2). In this paper, the effectiveness of the feedback loop is verified theoretically using Jones transfer matrix. Simulation results indicate that: (1) the error signal of the feedback loop (the yaxis polarized component in the output of the resonator) changes linearly with Δl; (2) the error signal diminishes as Δl is adjusted to the ideal condition of B/2, which are in good accordance with our experimental results.

Citation Download Citation

Xijing Wang, Zuyuan He, and Kazuo Hotate "Automated suppression of polarization-fluctuation in resonator fiber optic gyro by a resonator with twin 90° polarization-axis rotated splices: theoretical analysis", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76533H (8 September 2010); https://doi.org/10.1117/12.866320

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