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Optical Engineering

Magnetic drift in single depolarizer interferometric fiber-optic gyroscopes induced by orthogonal magnetic field
Author(s): Dengwei Zhang; Yuxiang Zhao; Xiaowu Shu; Cheng Liu; Wenlan Fu; Wenqing Zhou
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Paper Abstract

We proposed a theory that an orthogonal magnetic field (OMF), vertical to the light propagating direction in fiber-optics, can induce a nonreciprocal phase difference (NPD) in single depolarizer interferometric fiber-optic gyroscopes (SD-IFOGs). The relational mathematical model is established. The theoretical simulation and experimental results show that the orthogonal magnetic drift in the SD-IFOG, randomly distributed within a certain range, is independent of the incident angle on the depolarizer side but closely related to that on another side of the fiber coil. By shifting the incident angle on the nondepolarizer side, the OMF induced NPD, in the SD-IFOG, varies accordingly around zero point.

Paper Details

Date Published: 22 May 2013
PDF: 6 pages
Opt. Eng. 52(5) 054403 doi: 10.1117/1.OE.52.5.054403
Published in: Optical Engineering Volume 52, Issue 5
Show Author Affiliations
Dengwei Zhang, Zhejiang Univ. (China)
Yuxiang Zhao, Zhejiang Univ. (China)
Xiaowu Shu, Zhejiang Univ. (China)
Cheng Liu, Zhejiang Univ. (China)
Wenlan Fu, Zhejiang E-strong Communication Technology Co., Ltd. (China)
Wenqing Zhou, Zhejiang Province Institute of Metrology (China)

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