Effect of phase modulation nonlinearity in resonator micro-optic gyro

被引：12
|
作者：
Hong, Lingfei [1 ]
Zhang, Chunxi [1 ]
Feng, Lishuang [1 ]
Lei, Ming [1 ]
Yu, Huaiyong [1 ]
机构：
[1] Beihang Univ, Sch Instrumentat Sci & Optoelect Engn, Key Lab Micronano Measurement Manipulat & Phys, Minist Educ, Beijing 100191, Peoples R China
来源：
OPTICAL ENGINEERING | 2011年 / 50卷 / 09期
关键词：
resonator micro-optic gyro; modulation; triangle waveform; nonlinearity; scale factor; PASSIVE RING-RESONATOR; BACKSCATTERING; GYROSCOPE; ROTATION;
D O I：
10.1117/1.3625421
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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. (C) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3625421]
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页数：5
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