Passive compensation of intensity and polarization-induced noise by a quadrature demodulation technique in a resonator optic gyroscope

Liu Ning; Niu Yanxiong; Feng Lishuang; Jiao Hongchen; Wang Xiao

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Passive compensation of intensity and polarization-induced noise by a quadrature demodulation technique in a resonator optic gyroscope

机译：通过正交解调技术在谐振仪光学陀螺中的强度和极化诱导噪声的被动补偿

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摘要

Polarization-induced noise is a dominant noise that seriously hinders the progress of resonator optic gyroscopes. Many countermeasures have been developed but showed insufficient performance. In this paper, we propose a quadrature demodulation technique (QDT) that adopts references of both sine and cosine to demodulate the signal. Theoretical analyses of the polarization effect and QDT are shown, and experimental results are listed and compared. Experimental results are consistent with theoretical analyses. QDT shows great performance in suppressing environment- and polarization-induced phase fluctuation of signal. We also demodulate the intensity-dependent coefficient of 2 Omega t term, which is demonstrated effective for compensating polarization-induced intensity noise together with QDT. The scheme shows significant progress in improving long-term stability. (C) 2018 Optical Society of America

机译：偏振诱导的噪声是严重阻碍谐振器光学陀螺仪的进展的主要噪声。已经开发出许多对策，但表现出不足。在本文中，我们提出了一种正交解调技术（QDT），其采用SINE和余弦的参考来解调信号。显示了偏振效应和QDT的理论分析，并列出了实验结果并进行了比较。实验结果与理论分析一致。 QDT在抑制环境和极化诱导的信号的相位波动方面表现出很大的性能。我们还将2 omega T术语的强度依赖系数解调，这被证明是为了与QDT补偿偏振引起的强度噪声。该方案在提高长期稳定性方面表现出显着进展。（c）2018年光学学会

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来源
《Applied optics》 |2018年第29期|共9页
作者
Liu Ning; Niu Yanxiong; Feng Lishuang; Jiao Hongchen; Wang Xiao;
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作者单位

Beihang Univ Sch Instrumentat Sci &

Optoelect Engn Beijing 100191 Peoples R China;

Beihang Univ Sch Instrumentat Sci &

Optoelect Engn Beijing 100191 Peoples R China;

Beihang Univ Sch Instrumentat Sci &

Optoelect Engn Beijing 100191 Peoples R China;

Beihang Univ Sch Instrumentat Sci &

Optoelect Engn Beijing 100191 Peoples R China;

Beihang Univ Sch Instrumentat Sci &

Optoelect Engn Beijing 100191 Peoples R China;

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正文语种 eng
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Passive compensation of intensity and polarization-induced noise by a quadrature demodulation technique in a resonator optic gyroscope

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