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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 20, Iss. 11 — Nov. 1, 2003
  • pp: 2131–2136

Planar photonic crystal structure with inherently single-mode waveguides

Alejandro Martinez, Jaime Garcia, Guillermo Sanchez, and Javier Marti  »View Author Affiliations


JOSA A, Vol. 20, Issue 11, pp. 2131-2136 (2003)
http://dx.doi.org/10.1364/JOSAA.20.002131


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Abstract

A planar photonic crystal that allows inherently gap-guided single-mode waveguides is proposed and discussed. This novel structure consists of a two-dimensional lattice of silicon rods embedded on a thin silica slab sandwiched between two silica claddings whose refractive indices are slightly lower than the index of the silica core. The physical parameters of the structure, i.e., rod radius and core thickness, are optimized to maximize the bandgap width for odd modes. Lossless guided modes inside the bandgap and below the claddings’ light cone are obtained by reducing the radius of a row of rods. The waveguide bandwidth can be increased by inserting a thin silicon dielectric waveguide instead of the row of rods. The proposed approach may overcome many of the common drawbacks in conventional holes-on-dielectric planar photonic crystal waveguides.

© 2003 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
(230.7400) Optical devices : Waveguides, slab

History
Original Manuscript: April 23, 2003
Revised Manuscript: July 17, 2003
Manuscript Accepted: July 23, 2003
Published: November 1, 2003

Citation
Alejandro Martinez, Jaime Garcia, Guillermo Sanchez, and Javier Marti, "Planar photonic crystal structure with inherently single-mode waveguides," J. Opt. Soc. Am. A 20, 2131-2136 (2003)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-20-11-2131

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