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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 27 — Dec. 17, 2012
  • pp: 28839–28845

Orthogonal polarization mode coupling for pure twisted polarization maintaining fiber Bragg gratings

Fei Yang, Zujie Fang, Zhengqing Pan, Qing Ye, Haiwen Cai, and Ronghui Qu  »View Author Affiliations


Optics Express, Vol. 20, Issue 27, pp. 28839-28845 (2012)
http://dx.doi.org/10.1364/OE.20.028839


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Abstract

Spectral characteristics of orthogonal polarization mode coupling for pure twisted polarization maintaining fiber Bragg gratings (PM-FBG) are proposed and analyzed experimentally and theoretically. Different from the polarization mode coupling in PM-FBG due to side pressure, a resonant peak at the middle of two orthogonal polarization modes is found when the PM-FBG is twisted purely which is attributed to the cross coupling of polarization modes. Its intensity increases with the twisting rate. A new coupled mode equation is built to describe the pure twist polarization mode coupling, in which both the normal strain induced by strain-applied parts and the tangential strain induced by twisting are taken into consideration and expressed in a unified coordinate. The novel phenomenon and its explanation are believed to be helpful for PM-FBG applications in fiber sensor and laser technologies.

© 2012 OSA

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2420) Fiber optics and optical communications : Fibers, polarization-maintaining
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: September 25, 2012
Revised Manuscript: November 8, 2012
Manuscript Accepted: December 9, 2012
Published: December 12, 2012

Citation
Fei Yang, Zujie Fang, Zhengqing Pan, Qing Ye, Haiwen Cai, and Ronghui Qu, "Orthogonal polarization mode coupling for pure twisted polarization maintaining fiber Bragg gratings," Opt. Express 20, 28839-28845 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-27-28839


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