Thermal phase noise in giant interferometric fiber optic gyroscopes

被引：47

作者：

Li, Yulin ^{[1
]}

Cao, Yuwen ^{[1
]}

He, Dong ^{[1
]}

Wu, Yangjun ^{[1
]}

Chen, Fangyuan ^{[1
]}

Peng, Chao ^{[1
]}

Li, Zhengbin ^{[1
]}

机构：

[1] Peking Univ, State Key Lab Adv Opt Commun Syst & Networks, Sch Elect Engn & Comp Sci, Beijing 100871, Peoples R China

来源：

OPTICS EXPRESS | 2019年 / 27卷 / 10期

基金：

中国国家自然科学基金;

关键词：

RELATIVE INTENSITY NOISE; TEMPERATURE; SAGNAC; FLUCTUATIONS;

D O I：

10.1364/OE.27.014121

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The thermal phase noise in giant interferometric fiber optic gyroscopes (fiber length L > 10 km) and its impact on the detection sensitivity are theoretically derived and experimentally verified. It is confirmed that thermal phase noise cannot be overlooked for the giant IFOGs. Utilizing high order eigen frequency modulation can effectively suppress the walk-off component of thermal phase noise, but the residual part contributes to high-frequency range thus limits the detection bandwidth of giant. IFOGs. The self-noise is experimentally demonstrated as 3.5 nrad/s/root Hz at low frequencies and 5.2 nrad/s/root Hz at 100 Hz in the IFOG with a 30-km single mode fiber coil. Discussions about the fiber characteristics on thermal phase noise are presented, which paves the way to the design of giant IFOGs. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：14121 / 14132

页数：12

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