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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 3 — Jan. 31, 2011
  • pp: 2251–2256

Adiabatic circular polarizer based on chiral fiber grating

Li Yang, Lin-Lin Xue, Cheng Li, Jue Su, and Jing-Ren Qian  »View Author Affiliations

Optics Express, Vol. 19, Issue 3, pp. 2251-2256 (2011)

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Based on the adiabatic coupling principle, a new scheme of a broadband circular polarizer formed by twisting a high-birefringence (Hi-Bi) fiber with a slowly varying twist rate is proposed. The conditions of adiabatic coupling for the adiabatic polarizer are first identified through analytical derivations. These conditions are easily realized by choosing a reasonable variation of the twist rate. Moreover, the bandwidth of the polarizer is able to be directly determined by the twist rates at the two ends. Finally, the broadband characteristics of the polarizer are demonstrated by simulations. It is also shown that the performance of the polarizer can be remarkably improved by accomplishing a multi-mode phase-matching along the grating or by using of the couplings of the core mode to lossy modes.

© 2011 OSA

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2340) Fiber optics and optical communications : Fiber optics components
(230.5440) Optical devices : Polarization-selective devices

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: December 3, 2010
Revised Manuscript: January 14, 2011
Manuscript Accepted: January 14, 2011
Published: January 24, 2011

Li Yang, Lin-Lin Xue, Cheng Li, Jue Su, and Jing-Ren Qian, "Adiabatic circular polarizer based on chiral fiber grating," Opt. Express 19, 2251-2256 (2011)

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