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

被引：8

作者：

Bi, Ran ^{[1
]}

Miao, Lijun ^{[1
]}

Huang, Tengchao ^{[1
]}

Ying, Guangyao ^{[2
]}

Che, Shuangliang ^{[1
]}

Shu, Xiaowu ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, 38 Zheda Rd, Hangzhou 310027, Zhejiang, Peoples R China

[2] State Grid Zhejiang Elect Power Res Inst, Hangzhou 310014, Zhejiang, Peoples R China

来源：

SENSORS | 2019年 / 19卷 / 13期

基金：

国家重点研发计划; 浙江省自然科学基金;

关键词：

interferometric fiber optic gyroscope; multifunction integrated optical chip; halfwave voltage; frequency dependence; MODULATOR;

D O I：

10.3390/s19132851

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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.

引用

页数：10

共 16 条

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