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Optics Letters

Optics Letters


  • Vol. 28, Iss. 20 — Oct. 15, 2003
  • pp: 1876–1878

Double-helix chiral fibers

Victor I. Kopp and Azriel Z. Genack  »View Author Affiliations

Optics Letters, Vol. 28, Issue 20, pp. 1876-1878 (2003)

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A polarization-selective photonic stop band is demonstrated in a new chiral fiber structure with double-helix symmetry. The stop band exists for only circularly polarized radiation with the same handedness as the structure and is centered at a wavelength in the fiber equal to the fiber pitch. When one part of the chiral fiber is twisted about its axis, a localized mode is produced, which can be tuned across the gap by changing the twist angle. Observations in single-mode fibers are in good agreement with one-dimensional simulations of a dispersive cholesteric material. At higher frequencies, however, we find a sharp onset of a broad polarization-selective scattering band, which is not present in one-dimensional simulations.

© 2003 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(230.5440) Optical devices : Polarization-selective devices

Victor I. Kopp and Azriel Z. Genack, "Double-helix chiral fibers," Opt. Lett. 28, 1876-1878 (2003)

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  1. H. Yokoyama and K. Ujihara, Spontaneous Emission and Laser Oscillation in Microcavities (CRC Press, Boca Raton, Fla., 1995).
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  3. S. Chandrasekhar, Liquid Crystals (Cambridge U. Press, Cambridge, England, 1977).
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  7. A. Lakhtakia and R. Messier, Opt. Photon. News 12(9), 27 (2001).
  8. V. I. Kopp, Z.-Q. Zhang, and A. Z. Genack, Phys. Rev. Lett. 86, 1753 (2001).
  9. I. J. Hodgkinson, Q. H. Wu, K. E. Thorn, A. Lakhtakia, and M. W. McCall, Opt. Commun. 184, 57 (2000).
  10. V. I. Kopp and A. Z. Genack, “Chiral twist laser and filter apparatus and method,” U.S. patent 6, 396, 859 (May 28, 2002).
  11. V. I. Kopp and A. Z. Genack, Phys. Rev. Lett. 89, 033901 (2002).
  12. V. I. Kopp, R. Bose, and A. Z. Genack, Opt. Lett. 28, 349 (2003).

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