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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 19 — Oct. 1, 2012
  • pp: 4110–4112

One-way edge mode in a gyromagnetic photonic crystal slab

Kexin Liu, Linfang Shen, and Sailing He  »View Author Affiliations

Optics Letters, Vol. 37, Issue 19, pp. 4110-4112 (2012)

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We demonstrate that one-way electromagnetic modes could be sustained by the edge of a gyromagnetic photonic crystal slab of triangular lattice under an external dc magnetic field. The applied magnetic field breaks the time-reversal symmetry of the three-dimensional system, and thus the original degeneracy point in k space, at which two dispersion surfaces intersect, is lifted, resulting in a photonic band gap below the light cone. At this band gap, the one-way mode is localized horizontally to the slab edge, while confined by the index contrast in the vertical direction.

© 2012 Optical Society of America

OCIS Codes
(230.3810) Optical devices : Magneto-optic systems
(240.6690) Optics at surfaces : Surface waves
(160.5298) Materials : Photonic crystals

ToC Category:
Photonic Crystals

Original Manuscript: July 11, 2012
Revised Manuscript: August 29, 2012
Manuscript Accepted: August 31, 2012
Published: September 27, 2012

Kexin Liu, Linfang Shen, and Sailing He, "One-way edge mode in a gyromagnetic photonic crystal slab," Opt. Lett. 37, 4110-4112 (2012)

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