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Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 6 — Mar. 15, 2014
  • pp: 1382–1385

Nonreciprocal phase shift caused by magnetic-thermal coupling of a polarization maintaining fiber optic gyroscope

Dengwei Zhang, Yuxiang Zhao, Wenlan Fu, Wenqing Zhou, Cheng Liu, Xiaowu Shu, and Shuangliang Che  »View Author Affiliations


Optics Letters, Vol. 39, Issue 6, pp. 1382-1385 (2014)
http://dx.doi.org/10.1364/OL.39.001382


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Abstract

A theory for nonreciprocal phase shift caused by cross coupling generated in a polarization maintaining (PM) fiber optic gyroscope (FOG) under the combined action of magnetic and temperature fields is proposed. The magnetic-thermal coupling in the FOG originates from the interaction of the magnetic field, fiber twist, birefringence caused by thermal stress, and the intrinsic and bending birefringence of the fiber. The cross coupling changes with temperature. When the PM fiber has a diameter of 250 μm, beat length of 3 mm, length of 500 m, twist rate of 1rad/m, and optical source wavelength of 1310 nm, the maximum degree of magnetic-thermal coupling generated by a 1 mT radial magnetic field within the temperature range of 20°Cto60°C is 5.47%.

© 2014 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2420) Fiber optics and optical communications : Fibers, polarization-maintaining
(060.2800) Fiber optics and optical communications : Gyroscopes

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: December 30, 2013
Manuscript Accepted: January 9, 2014
Published: March 5, 2014

Citation
Dengwei Zhang, Yuxiang Zhao, Wenlan Fu, Wenqing Zhou, Cheng Liu, Xiaowu Shu, and Shuangliang Che, "Nonreciprocal phase shift caused by magnetic-thermal coupling of a polarization maintaining fiber optic gyroscope," Opt. Lett. 39, 1382-1385 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-6-1382


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References

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