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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 36 — Dec. 20, 2004
  • pp: 6656–6663

Coupling Technique for Efficient Interfacing Between Silica Waveguides and Planar Photonic Crystal Circuits

Yuan-Fong Chau, Tzong-Jer Yang, and Win-Der Lee  »View Author Affiliations


Applied Optics, Vol. 43, Issue 36, pp. 6656-6663 (2004)
http://dx.doi.org/10.1364/AO.43.006656


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Abstract

We describe a two-step-size tapered structure with one defect pair that can markedly enhance the coupling efficiency at the entrance and exit terminals of a planar photonic crystal (PPC) waveguide. PPC waveguides are composed of circular dielectric rods set in two-dimensional square lattices. On the basis of our simulations, we found that the optimized scheme maximizes the power transmission above 90% at a wavelength of 1.55 μm. Besides, one can control the central frequency for optical communications by determining this defect configuration in an optimization procedure. Moreover, by properly adjusting the defect radii in PPC tapers, one can use the PPC circuit as a good reflector.

© 2004 Optical Society of America

OCIS Codes
(230.3120) Optical devices : Integrated optics devices
(260.0260) Physical optics : Physical optics
(260.2110) Physical optics : Electromagnetic optics

Citation
Yuan-Fong Chau, Tzong-Jer Yang, and Win-Der Lee, "Coupling Technique for Efficient Interfacing Between Silica Waveguides and Planar Photonic Crystal Circuits," Appl. Opt. 43, 6656-6663 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-36-6656

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