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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 11 — Nov. 1, 2013
  • pp: 2921–2927

Topological Zeeman effect and circular birefringence in twisted photonic crystal fibers

T. Weiss, G. K. L. Wong, F. Biancalana, S. M. Barnett, X. M. Xi, and P. St.J. Russell  »View Author Affiliations


JOSA B, Vol. 30, Issue 11, pp. 2921-2927 (2013)
http://dx.doi.org/10.1364/JOSAB.30.002921


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Abstract

The propagation of light guided in optical fibers is affected in different ways by bending or twisting. Here we treat the polarization properties of twisted six-fold symmetric photonic crystal fibers. Using a coordinate frame that follows the twisting structure, we show that the governing equation for the fiber modes resembles the Pauli equation for electrons in weak magnetic fields. This implies index splitting between left and right circularly polarized modes, which are degenerate in the untwisted fiber. We develop a theoretical model, based on perturbation theory and symmetry properties, to predict the observable circular birefringence (i.e., optical activity) associated with this splitting. Our overall conclusion is that optical activity requires the rotational symmetry to be broken so as to allow coupling between different total angular momentum states.

© 2013 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(220.0220) Optical design and fabrication : Optical design and fabrication
(260.0260) Physical optics : Physical optics

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 17, 2013
Revised Manuscript: September 25, 2013
Manuscript Accepted: September 26, 2013
Published: October 22, 2013

Citation
T. Weiss, G. K. L. Wong, F. Biancalana, S. M. Barnett, X. M. Xi, and P. St.J. Russell, "Topological Zeeman effect and circular birefringence in twisted photonic crystal fibers," J. Opt. Soc. Am. B 30, 2921-2927 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-11-2921

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