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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 10, Iss. 8 — Apr. 22, 2002
  • pp: 354–359

Modal conversion with artificial materials for photonic-crystal waveguides

Ph. Lalanne and A. Talneau  »View Author Affiliations

Optics Express, Vol. 10, Issue 8, pp. 354-359 (2002)

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We study adiabatic mode transformations in photonic-crystal integrated circuits composed of a triangular lattice of holes etched into a planar waveguide. The taper relies on the manufacture of holes with progressively-varying dimensions. The variation synthesizes an artificial material with a gradient effective index. Calculations performed with a three-dimensional exact electromagnetic theory yield high transmission over a wide frequency range. To evidence the practical interest of the approach, a mode transformer with a length as small as λ/2 is shown to provide a spectral-averaged transmission efficiency of 92% for tapering between a ridge waveguide and a photonic crystal waveguide with a one-row defect.

© 2002 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.3120) Optical devices : Integrated optics devices

ToC Category:
Research Papers

Original Manuscript: March 18, 2002
Revised Manuscript: April 8, 2002
Published: April 22, 2002

Philippe Lalanne and A. Talneau, "Modal conversion with artificial materials for photonic-crystal waveguides," Opt. Express 10, 354-359 (2002)

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