General formula describing drift of interferometer fiber-optic gyro due to Faraday effect: reduction of the drift in twin-depo-I-FOG

Author

Saida, T. ; Hotate, K.

Author_Institution

Dept. of Electron. Eng., Tokyo Univ., Japan

Volume

17

Issue

2

fYear

1999

fDate

2/1/1999 12:00:00 AM

Firstpage

222

Lastpage

228

Abstract

The drift of an interferometric fiber-optic gyro (I-FOG) by the magnetic field through the Faraday effect is generally formulated. By the derived formula, the drift reduction mechanism in the interferometric fiber-optic gyro using ordinary single-mode fiber as a sensing coil and two depolarizers (twin-depo-I-FOG) is clarified, as well as that in the interferometric fiber-optic gyro using polarization maintaining fiber (PM-I-FOG). Degradation factors in the practical twin-depo-I-FOG are evaluated by using the derived equation, and methods for further drift reduction are discussed

Keywords

Faraday effect; fibre optic gyroscopes; light interferometers; optical fibre polarisation; Faraday effect; depolarizers; drift reduction mechanism; interferometric fiber-optic gyro drift; magnetic field; polarization maintaining fiber; sensing coil; single-mode fiber; twin-depo-I-FOG; Costs; Faraday effect; Magnetic fields; Maintenance; Optical fiber communication; Optical fiber polarization; Optical fiber sensors; Optical fibers; Optical interferometry; Samarium;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.744228

Filename

744228