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Proceedings Paper

Automated suppression of polarization-fluctuation in resonator fiber optic gyro by a resonator with twin 90-degree polarization-axis rotated splices: theoretical analysis
Author(s): Xijing Wang; Zuyuan He; Kazuo Hotate
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Paper 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.

Paper Details

Date Published: 8 September 2010
PDF: 4 pages
Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76533H (8 September 2010); doi: 10.1117/12.866320
Show Author Affiliations
Xijing Wang, The Univ. of Tokyo (Japan)
Zuyuan He, The Univ. of Tokyo (Japan)
Kazuo Hotate, The Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 7653:
Fourth European Workshop on Optical Fibre Sensors
José Luís Santos; Brian Culshaw; José Miguel López-Higuera; William N. MacPherson, Editor(s)

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