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Volume 19
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10.3390/s19132851
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Article

Research on the Frequency-Dependent Halfwave Voltage of a Multifunction Integrated Optical Chip in an Interferometric Fiber Optic Gyroscope

by
Ran Bi
1,
Lijun Miao
1,*,
Tengchao Huang
1,
Guangyao Ying
2,
Shuangliang Che
1 and
Xiaowu Shu
1
1
State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, No. 38 Zheda Road, Hangzhou 310027, China
2
State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(13), 2851; https://doi.org/10.3390/s19132851
Submission received: 28 May 2019 / Revised: 16 June 2019 / Accepted: 19 June 2019 / Published: 27 June 2019
(This article belongs to the Section Optical Sensors)
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Abstract

The multifunction integrated optical chip (MIOC) is one of the most critical parts of the interferometric fiber optic gyroscope (IFOG), and research on the halfwave voltage of the MIOC is meaningful for a high-precision IFOG. In this paper, the correlation between the frequency and halfwave voltage, which affects the interference light intensity of IFOG, is presented theoretically. A widespread measurement method for frequency dependence of the halfwave voltage, based on lock-in amplification and sinusoidal modulation, is proposed. Further, the measurement result and the oscillation of interference light intensity in the Sagnac interferometer are presented, which are in great agreement with the theory. This paper proposes the frequency dependence of the halfwave voltage and provides a new error research direction for the improvement of the MIOC in a high-precision IFOG.
Keywords: interferometric fiber optic gyroscope; multifunction integrated optical chip; halfwave voltage; frequency dependence interferometric fiber optic gyroscope; multifunction integrated optical chip; halfwave voltage; frequency dependence

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MDPI and ACS Style

Bi, R.; Miao, L.; Huang, T.; Ying, G.; Che, S.; Shu, X. Research on the Frequency-Dependent Halfwave Voltage of a Multifunction Integrated Optical Chip in an Interferometric Fiber Optic Gyroscope. Sensors 2019, 19, 2851. https://doi.org/10.3390/s19132851

AMA Style

Bi R, Miao L, Huang T, Ying G, Che S, Shu X. Research on the Frequency-Dependent Halfwave Voltage of a Multifunction Integrated Optical Chip in an Interferometric Fiber Optic Gyroscope. Sensors. 2019; 19(13):2851. https://doi.org/10.3390/s19132851

Chicago/Turabian Style

Bi, Ran, Lijun Miao, Tengchao Huang, Guangyao Ying, Shuangliang Che, and Xiaowu Shu. 2019. "Research on the Frequency-Dependent Halfwave Voltage of a Multifunction Integrated Optical Chip in an Interferometric Fiber Optic Gyroscope" Sensors 19, no. 13: 2851. https://doi.org/10.3390/s19132851

APA Style

Bi, R., Miao, L., Huang, T., Ying, G., Che, S., & Shu, X. (2019). Research on the Frequency-Dependent Halfwave Voltage of a Multifunction Integrated Optical Chip in an Interferometric Fiber Optic Gyroscope. Sensors, 19(13), 2851. https://doi.org/10.3390/s19132851

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