Analyzing photonic crystal waveguides by Dirichlet-to-Neumann maps
JOSA B, Vol. 24, Issue 11, pp. 2860-2867 (2007)
http://dx.doi.org/10.1364/JOSAB.24.002860
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Abstract
An efficient numerical method is developed for the modal analysis of two-dimensional photonic crystal waveguides (PCWs). Using the Dirichlet-to-Neumann (DtN) map of the supercell, the waveguide modes are solved from an eigenvalue problem formulated on two boundaries of the supercell, leading to significantly smaller matrices when it is discretized. The eigenvalue problem is linear even when the medium is dispersive. The DtN map of a domain is an operator that maps the wave field on the boundary of the domain to the normal derivative of the field. The DtN map of the supercell can be efficiently calculated by merging the DtN maps of the ordinary and defect unit cells.
© 2007 Optical Society of America
OCIS Codes
(000.4430) General : Numerical approximation and analysis
(130.5296) Integrated optics : Photonic crystal waveguides
(050.5298) Diffraction and gratings : Photonic crystals
ToC Category:
Photonic Crystals
History
Original Manuscript: July 2, 2007
Revised Manuscript: September 11, 2007
Manuscript Accepted: September 14, 2007
Published: October 29, 2007
Citation
Yuexia Huang, Ya Yan Lu, and Shaojie Li, "Analyzing photonic crystal waveguides by Dirichlet-to-Neumann maps," J. Opt. Soc. Am. B 24, 2860-2867 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-11-2860
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