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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 22 — Oct. 25, 2010
  • pp: 23258–23274

Generation of adaptive coordinates and their use in the Fourier Modal Method

Sabine Essig and Kurt Busch  »View Author Affiliations

Optics Express, Vol. 18, Issue 22, pp. 23258-23274 (2010)

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We present an improvement of the standard Fourier Modal Method (FMM) for the analysis of lamellar gratings that is based on the use of automatically generated adaptive coordinates for arbitrarily shaped material profiles in the lateral plane of periodicity. This allows for an accurate resolution of small geometric features and/or large material contrasts within the unit. For dielectric gratings, we obtain considerable convergence accelerations. Similarly, for metallic gratings, our approach allows efficient and accurate computations of transmittance and reflectance coefficients into various Bragg orders, the spectral positions of Rayleigh anomalies, and field enhancement values within the grating structures.

© 2010 Optical Society of America

OCIS Codes
(090.1970) Holography : Diffractive optics
(050.1755) Diffraction and gratings : Computational electromagnetic methods
(160.3918) Materials : Metamaterials
(160.5298) Materials : Photonic crystals

ToC Category:
Diffraction and Gratings

Original Manuscript: July 27, 2010
Revised Manuscript: September 10, 2010
Manuscript Accepted: September 13, 2010
Published: October 20, 2010

Sabine Essig and Kurt Busch, "Generation of adaptive coordinates and their use in the Fourier Modal Method," Opt. Express 18, 23258-23274 (2010)

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