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Proceedings Paper

Double closed-loop resonator fiber optic gyro with improved digital serrodyne modulation
Author(s): Huilian Ma; Xuhui Yu; Zhonghe Jin
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Paper Abstract

A double closed-loop resonator fiber optic gyro (RFOG) with an improved digital serrodyne scheme is experimentally demonstrated. To overcome the effect of the imperfect serrodyne modulation, an improved frequency shifting module is designed and constructed on a single FPGA. The frequency resolution is improved to 0.01Hz, which is equivalent to a rotation rate of 0.04°/h. A bias stability of 2°/h is achieved in a double closed-loop RFOG with a 14.25-m long fiber ring resonator. This is the best result reported to date, to the best of our knowledge, for closed-loop RFOGs. Moreover, good linearity and large dynamic range are also experimentally demonstrated thanks to the closed-loop operation.

Paper Details

Date Published: 20 May 2013
PDF: 5 pages
Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87940S (20 May 2013); doi: 10.1117/12.2026050
Show Author Affiliations
Huilian Ma, Zhejiang Univ. (China)
Xuhui Yu, Zhejiang Univ. (China)
Zhonghe Jin, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 8794:
Fifth European Workshop on Optical Fibre Sensors
Leszek R. Jaroszewicz, Editor(s)

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