| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Analysis of resonance asymmetry phenomenon in resonator integrated optic gyro |
| Yao Fei(费瑶)1,2, Yu-Ming He(何玉铭)1,2, Xiao-Dong Wang(王晓东)1,3, Fu-Hua Yang(杨富华)1,3, Zhao-Feng Li(李兆峰)1,3 |
1 Engineering Research Center for Semiconductor Integrated Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
2 College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Science, Beijing 100049, China;
3 School of Microelectronics, University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract Resonator integrated optic gyro (RIOG) is a high-accuracy gyroscope based on the Sagnac effect. The waveguide-type ring resonator is a key rotation sensing element in the RIOG. An asymmetric resonance line shape is found in the optic resonator. These asymmetries will induce offset errors when the phase modulation spectroscopy technique (PMST) is applied to the RIOG. The polarization errors and the difference among normal mode losses are found to be the two main sources of resonance asymmetry in an experiment. These sources are fully investigated and their contributions to the offset errors are compared. The analysis shows that proper modulation frequencies in clockwise (CW) and counterclockwise (CCW) directions can reduce an RIOG bias error. A transmissive resonator is recommended to obtain a better resonance line shape.
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Received: 18 October 2017
Revised: 12 March 2018
Accepted manuscript online:
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PACS:
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42.79.Gn
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(Optical waveguides and couplers)
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42.81.Pa
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(Sensors, gyros)
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42.82.-m
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(Integrated optics)
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| Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2016YFA02005003) and the National Natural Science Foundation of China (Grant Nos. 61274066, 61504138, and 61474115). |
Corresponding Authors:
Zhao-Feng Li
E-mail: lizhaofeng@semi.ac.cn
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Cite this article:
Yao Fei(费瑶), Yu-Ming He(何玉铭), Xiao-Dong Wang(王晓东), Fu-Hua Yang(杨富华), Zhao-Feng Li(李兆峰) Analysis of resonance asymmetry phenomenon in resonator integrated optic gyro 2018 Chin. Phys. B 27 084213
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