The finite element method as applied to the diffraction by an anisotropic grating

The main goal of the method proposed in this paper is the numerical study of various kinds of anisotropic gratings deposited on isotropic substrates, without any constraint upon the diffractive pattern geometry or electromagnetic properties. To that end we propose a new FEM (Finite Element Method) f...

Full description

Saved in:
Bibliographic Details
Published in:Optics express 2007-12, Vol.15 (26), p.18089-18102
Main Authors: Demésy, Guillaume, Zolla, Frédéric, Nicolet, André, Commandré, Mireille, Fossati, Caroline
Format: Article
Language:English
Subjects:
Anisotropy
Computer Simulation
Computer-Aided Design
Equipment Design
Equipment Failure Analysis
Finite Element Analysis
Light
Models, Theoretical
Optics
Physics
Refractometry - instrumentation
Refractometry - methods
Reproducibility of Results
Scattering, Radiation
Sensitivity and Specificity
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The main goal of the method proposed in this paper is the numerical study of various kinds of anisotropic gratings deposited on isotropic substrates, without any constraint upon the diffractive pattern geometry or electromagnetic properties. To that end we propose a new FEM (Finite Element Method) formulation which rigorously deals with each infinite issue inherent to grating problems. As an example, 2D numerical experiments are presented in the cases of the diffraction of a plane wave by an anisotropic aragonite grating on silica substrate (for the two polarization cases and at normal or oblique incidence). We emphasize the interesting property that the diffracted field is non symmetric in a geometrically symmetric configuration.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.15.018089