CLC number: TN253
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2014-05-04
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Di-qing Ying, Qiang Li, Hui-lian Ma, Zhong-he Jin. Residual intensity modulation in resonator fiber optic gyros with sinusoidal wave phase modulation[J]. Journal of Zhejiang University Science C, 2014, 15(6): 482-488.
@article{title="Residual intensity modulation in resonator fiber optic gyros with sinusoidal wave phase modulation",
author="Di-qing Ying, Qiang Li, Hui-lian Ma, Zhong-he Jin",
journal="Journal of Zhejiang University Science C",
volume="15",
number="6",
pages="482-488",
year="2014",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.C1400036"
}
%0 Journal Article
%T Residual intensity modulation in resonator fiber optic gyros with sinusoidal wave phase modulation
%A Di-qing Ying
%A Qiang Li
%A Hui-lian Ma
%A Zhong-he Jin
%J Journal of Zhejiang University SCIENCE C
%V 15
%N 6
%P 482-488
%@ 1869-1951
%D 2014
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.C1400036
TY - JOUR
T1 - Residual intensity modulation in resonator fiber optic gyros with sinusoidal wave phase modulation
A1 - Di-qing Ying
A1 - Qiang Li
A1 - Hui-lian Ma
A1 - Zhong-he Jin
J0 - Journal of Zhejiang University Science C
VL - 15
IS - 6
SP - 482
EP - 488
%@ 1869-1951
Y1 - 2014
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.C1400036
Abstract: We present how residual intensity modulation (RIM) affects the performance of a resonator fiber optic gyro (R-FOG) through a sinusoidal wave phase modulation technique. The expression for the R-FOG system’s demodulation curve under RIM is obtained. Through numerical simulation with different RIM coefficients and modulation frequencies, we find that a zero deviation is induced by the RIM effect on the demodulation curve, and this zero deviation varies with the RIM coefficient and modulation frequency. The expression for the system error due to this zero deviation is derived. Simulation results show that the RIM-induced error varies with the RIM coefficient and modulation frequency. There also exists optimum values for the RIM coefficient and modulation frequency to totally eliminate the RIM-induced error, and the error increases as the RIM coefficient or modulation frequency deviates from its optimum value; however, in practical situations, these two parameters would not be exactly fixed but fluctuate from their respective optimum values, and a large system error is induced even if there exists a very small deviation of these two critical parameters from their optimum values. Simulation results indicate that the RIM-induced error should be considered when designing and evaluating an R-FOG system.
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