Title :
Fourier modal method for efficient modeling of periodically structured metasurfaces with unit cells of arbitrary shape
Author :
Weismann, Martin ; Panoiu, Nicolae Coriolan
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, London, UK
Abstract :
We introduce an expansion of the Fourier modal method for the analysis of periodic structures with oblique walls by using a three-dimensional normal vector field for the correct Fourier series factorization of products of discontinuous functions. Our numerical tests show that the improved method leads to faster convergence as compared to conventional two-dimensional decomposition rules.
Keywords :
Fourier series; Fourier transform optics; convergence; diffraction gratings; matrix decomposition; periodic structures; vectors; Fourier modal method; Fourier series factorization; periodically structured metasurfaces; three-dimensional normal vector field; two-dimensional decomposition rules; Convergence; Diffraction; Electromagnetics; Gratings; Optimized production technology; Three-dimensional displays;
Conference_Titel :
Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2014 8th International Congress on
Conference_Location :
Lyngby
Print_ISBN :
978-1-4799-3450-8
DOI :
10.1109/MetaMaterials.2014.6948678
