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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 22 — Oct. 29, 2007
  • pp: 14454–14466

Computing Photonic Crystal Defect Modes by Dirichlet-to-Neumann Maps

Shaojie Li and Ya Yan Lu  »View Author Affiliations


Optics Express, Vol. 15, Issue 22, pp. 14454-14466 (2007)
http://dx.doi.org/10.1364/OE.15.014454


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Abstract

We develop an efficient numerical method for computing defect modes in two dimensional photonic crystals based on the Dirichlet-to-Neumann (DtN) maps of the defect and normal unit cells. The DtN map of a unit cell is an operator that maps the wave field on the boundary of the cell to its normal derivative. The frequencies of the defect modes are solved from a condition that a small matrix is singular. The size of the matrix is related to the number of points used to discretize the boundary of the defect cell. The matrix is obtained by solving a linear system involving only discrete points on the edges of the unit cells in a truncated domain.

© 2007 Optical Society of America

OCIS Codes
(000.4430) General : Numerical approximation and analysis
(050.5298) Diffraction and gratings : Photonic crystals

ToC Category:
Photonic Crystals

History
Original Manuscript: September 4, 2007
Revised Manuscript: October 10, 2007
Manuscript Accepted: October 17, 2007
Published: October 18, 2007

Citation
Shaojie Li and Ya Yan Lu, "Computing Photonic Crystal Defect Modes by Dirichlet-to-Neumann Maps," Opt. Express 15, 14454-14466 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-22-14454


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