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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 23 — Nov. 15, 2004
  • pp: 5711–5722

Dispersion-guided resonances in two-dimensional photonic-crystal-embedded microcavities

Kevin K. Tsia and Andrew W. Poon  »View Author Affiliations

Optics Express, Vol. 12, Issue 23, pp. 5711-5722 (2004)

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We analyze dispersion-based guiding of resonances in two-dimensional (2-D) photonic-crystal-embedded microcavities (PCEMs) that comprise a finite-size square lattice of submicrometer air holes embedded in a high-index contrast square microcavity. Our 2-D finite-difference time-domain simulations of waveguide side-coupled PCEMs suggest high-Q quasi-periodic multimodes within the PC first band. The Q can increase by orders of magnitude as the mode frequency approaches the band-edge frequency or as the lattice dimension increases. By mapping the Fourier transform of the mode-field distributions onto the PC dispersion surface, we show that the modes k-vectors and group velocities are pointing near the ΓM direction.

© 2004 Optical Society of America

OCIS Codes
(230.3990) Optical devices : Micro-optical devices
(260.5740) Physical optics : Resonance

ToC Category:
Research Papers

Original Manuscript: August 26, 2004
Revised Manuscript: October 29, 2004
Published: November 15, 2004

Kevin Tsia and Andrew Poon, "Dispersion-guided resonances in two-dimensional photonic-crystal-embedded microcavities," Opt. Express 12, 5711-5722 (2004)

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