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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 27 — Dec. 17, 2012
  • pp: 28094–28105

Adaptive perfectly matched layer for Wood’s anomalies in diffraction gratings

Benjamin Vial, Frédéric Zolla, André Nicolet, Mireille Commandré, and Stéphane Tisserand  »View Author Affiliations


Optics Express, Vol. 20, Issue 27, pp. 28094-28105 (2012)
http://dx.doi.org/10.1364/OE.20.028094


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Abstract

We propose an Adaptive Perfectly Matched Layer (APML) to be used in diffraction grating modeling. With a properly tailored co-ordinate stretching depending both on the incident field and on grating parameters, the APML may efficiently absorb diffracted orders near grazing angles (the so-called Wood’s anomalies). The new design is implemented in a finite element method (FEM) scheme and applied on a numerical example of a dielectric slit grating. Its performances are compared with classical PML with constant stretching coefficient.

© 2012 OSA

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1755) Diffraction and gratings : Computational electromagnetic methods

ToC Category:
Diffraction and Gratings

History
Original Manuscript: September 19, 2012
Revised Manuscript: November 5, 2012
Manuscript Accepted: November 11, 2012
Published: December 4, 2012

Citation
Benjamin Vial, Frédéric Zolla, André Nicolet, Mireille Commandré, and Stéphane Tisserand, "Adaptive perfectly matched layer for Wood’s anomalies in diffraction gratings," Opt. Express 20, 28094-28105 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-27-28094


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