High efficiency 90 degree silica waveguide bend using an air hole photonic crystal region

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Permanent URL	http://hdl.lib.byu.edu/1877/484
Title	High efficiency 90 degree silica waveguide bend using an air hole photonic crystal region
BYU Creator	Cai, J. Kim, S. Nordin, Gregory P.
Creator	Jiang, J.
Keywords	Integrated optics; optical losses; optical waveguides; photonic crystals (PhCs); waveguide bends
Description/Abstract	We propose the hybrid integration of an air hole photonic crystal (PhC) structure with a high (0.75%) single-mode silica waveguide to achieve an ultracompact high efficiency 90 bend for transverse-magnetic polarized light. Diffraction from the periodic boundary between the PhC and silica waveguide regions is shown to seriously degrade the optical efficiency of the bend. A microgenetic algorithm ( GA) combined with a two-dimensional finite-difference time-domain method is used to modify the PhC and its boundary layer to suppress this diffraction which in turn maximizes bend efficiency. The final optimized structure has a 99.4% bend efficiency at a wavelength of 1.55 m and occupies an area of only 27 27 m.
Source	S. Kim, G. P. Nordin, J. Jiang, and J. Cai, "High efficiency 90 degree silica waveguide bend using an air hole photonic crystal region" IEEE Photonics Tech. Let. 16(8), pp. 1846-1848 (2004);
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Date Original	2004
Date Digital	2007-06-08
Language	English eng en
Publication Type	Peer-Reviewed Articles
Type	Text
Format	application/pdf
Owning Institution	Brigham Young University
BYU College	Ira A. Fulton College of Engineering and Technology
BYU Department	Electrical and Computer Engineering
Copyright Status	(c) 2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE;
Copyright Use Information	http://www.lib.byu.edu/generic_copyright.html

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High efficiency 90 degree silica waveguide bend using an air hole photonic crystal region

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