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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 12 — Dec. 1, 2007
  • pp: 3040–3047

Polarization-independent omnidirectional defect modes in Bragg gaps of one-dimensional photonic crystals

Mahendra Makhan and Satish Kumar Ramchurn  »View Author Affiliations


JOSA B, Vol. 24, Issue 12, pp. 3040-3047 (2007)
http://dx.doi.org/10.1364/JOSAB.24.003040


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Abstract

To minimize the dispersion of defect modes in the Bragg gap of a conventional one-dimensional photonic crystal (1D PC) doped with a defect layer of left-handed material (LHM), a numerical technique is developed for tuning the optimized parameters of the defect. Through a defect couple comprising a pair of adjacent right-handed material and LHM defect layers, omnidirectional defect modes (ODMs), within a determined tolerance limit, are generated and shown to be much less dispersive than some recently reported near-zero dispersion defect modes. A defect couple with a dispersive LHM yields multiple near-zero dispersion channels in the bandgap. We propose the defect-couple 1D PC as a design for generating polarization-independent ODMs.

© 2007 Optical Society of America

OCIS Codes
(230.4170) Optical devices : Multilayers
(260.0260) Physical optics : Physical optics
(350.2460) Other areas of optics : Filters, interference

ToC Category:
Photonic Crystals

History
Original Manuscript: June 14, 2007
Revised Manuscript: October 8, 2007
Manuscript Accepted: October 10, 2007
Published: November 30, 2007

Citation
Mahendra Makhan and Satish Kumar Ramchurn, "Polarization-independent omnidirectional defect modes in Bragg gaps of one-dimensional photonic crystals," J. Opt. Soc. Am. B 24, 3040-3047 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-12-3040

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