Optical Sensors

Effect of phase modulation nonlinearity in resonator micro-optic gyro

[+] Author Affiliations
Lingfei Hong

Beihang University, School of Instrumentation Science and Optoelectronics Engineering, Key Laboratory of Micro-Nano, Measurement-Manipulation and Physics, Ministry of Education, #37 Xueyuan Road, Beijing, 100191, China

Chunxi Zhang

Beihang University, School of Instrumentation Science and Optoelectronics Engineering, Key Laboratory of Micro-Nano, Measurement-Manipulation and Physics, Ministry of Education, #37 Xueyuan Road, Beijing, 100191, China

Lishuang Feng

Beihang University, School of Instrumentation Science and Optoelectronics Engineering, Key Laboratory of Micro-Nano, Measurement-Manipulation and Physics, Ministry of Education, #37 Xueyuan Road, Beijing, 100191, China

Ming Lei

Beihang University, School of Instrumentation Science and Optoelectronics Engineering, Key Laboratory of Micro-Nano, Measurement-Manipulation and Physics, Ministry of Education, #37 Xueyuan Road, Beijing, 100191, China

Huaiyong Yu

Beihang University, School of Instrumentation Science and Optoelectronics Engineering, Key Laboratory of Micro-Nano, Measurement-Manipulation and Physics, Ministry of Education, #37 Xueyuan Road, Beijing, 100191, China

Opt. Eng. 50(9), 094404 (September 02, 2011). doi:10.1117/1.3625421
History: Received May 17, 2011; Revised July 08, 2011; Published September 02, 2011; Accepted July 26, 2011; Online September 02, 2011
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Serrodyne phase modulation is one of the most widely used frequency shifting techniques in a resonator micro-optic gyro (RMOG). However, to achieve high gyro performance, extraordinary linearity of the serrodyne waveform is critically required. In this paper, compact RMOG with an ultrashort micro-optic resonator using analog triangle phase modulation is proposed. Theoretical analysis on the effects of second and third order nonlinearity of the modulation waveform, along with quantitative calculation of errors induced by the modulating nonlinearity, is presented. Performances of the established RMOG system are experimentally demonstrated, with nonlinearity measurement of the generated and applied triangle waveform. The proposed scheme shows great capability in near-linear waveform generation with quite simple electrical elements.

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© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Lingfei Hong ; Chunxi Zhang ; Lishuang Feng ; Ming Lei and Huaiyong Yu
"Effect of phase modulation nonlinearity in resonator micro-optic gyro", Opt. Eng. 50(9), 094404 (September 02, 2011). ; http://dx.doi.org/10.1117/1.3625421


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