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

Essig, S.; Busch, K.

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.

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Verlagsausgabe §
DOI: 10.5445/IR/1000035419
Veröffentlicht am 09.05.2018
DOI: 10.1364/OE.18.023258
Zitationen: 29
Web of Science
Zitationen: 26
Zugehörige Institution(en) am KIT Institut für Theoretische Festkörperphysik (TFP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2010
Sprache Englisch
Identifikator ISSN: 1094-4087
KITopen-ID: 1000035419
Erschienen in Optics Express
Band 18
Heft 22
Seiten 23258-23274
Schlagworte Diffractive optics, Photonic crystals, Metamaterials, Computational electromagnetic methods
Nachgewiesen in Web of Science
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