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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 22 — Oct. 30, 2006
  • pp: 10887–10897

Localized propagation modes guided by shear discontinuities in photonic crystals

Kehan Tian, George Barbastathis, and John Hong  »View Author Affiliations

Optics Express, Vol. 14, Issue 22, pp. 10887-10897 (2006)

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We propose and analyze shear discontinuities as a new type of defect in photonic crystals. This defect can support guided modes with minimum group velocity dispersion (GVD) and maximum bandwidth, provided that the shear shift equals half the lattice constant. A mode gap emerges when the shear shift is different than half the lattice constant. The shear shift can be used to tune the bandwidth, group velocity, and group velocity dispersion (GVD) of the guided mode. The necessary condition for the existence of guided modes along the shear plane is discussed.

© 2006 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(230.7370) Optical devices : Waveguides
(250.5300) Optoelectronics : Photonic integrated circuits

ToC Category:
Photonic Crystals

Original Manuscript: April 28, 2006
Revised Manuscript: June 20, 2006
Manuscript Accepted: June 26, 2006
Published: October 30, 2006

Kehan Tian, George Barbastathis, and John Hong, "Localized propagation modes guided by shear discontinuities in photonic crystals," Opt. Express 14, 10887-10897 (2006)

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