All-Depolarized Interferometric Fiber-Optic Gyroscope Based on Optical Compensation

Author

Zinan Wang ; Yi Yang ; Ping Lu ; Yongxiao Li ; Dayu Zhao ; Chao Peng ; Zhenrong Zhang ; Zhengbin Li

Author_Institution

Dept. of Electron., Peking Univ., Beijing, China

Volume

6

Issue

1

fYear

2014

fDate

Feb. 2014

Firstpage

1

Lastpage

8

Abstract

We propose and demonstrate a novel configuration for depolarized interferometric fiber-optic gyroscopes (IFOGs). This configuration utilizes optical compensation between two orthogonal polarizations for suppressing errors induced by polarization nonreciprocity. Theoretical analysis shows that it is a new approach different from conventional IFOGs where a polarizer is mandatory. An experimental demonstration of the proposed IFOG (2097-m coil, open-loop configuration) achieves a low bias drift of 0.016 °/h in detecting the Earth´s rotation rate. Furthermore, this configuration requires no polarizer or any other polarization-maintaining device.

Keywords

fibre optic sensors; light interferometry; Earth rotation rate; all-depolarized interferometric fiber-optic gyroscope; optical compensation; orthogonal polarizations; polarization nonreciprocity; polarization-maintaining device; Adaptive optics; Coils; Licenses; Optical fiber sensors; Optical interferometry; Optical polarization; Sagnac effect; Sensors; fiber-optic gyroscope (FOG);

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2014.2299212

Filename

6708419