Analysis of Highly Conducting Lamellar Gratings With Multidomain Pseudospectral Method

Autor:	Wen-Lan Yeh, Nai-Yuan Shih, Yih-Peng Chiou
Rok vydání:	2009
Předmět:	Diffraction Classical mechanics Helmholtz equation Wave propagation Frequency domain Mathematical analysis Pseudo-spectral method Boundary value problem Spectral method Rigorous coupled-wave analysis Atomic and Molecular Physics and Optics Mathematics::Numerical Analysis Mathematics
Zdroj:	Journal of Lightwave Technology. 27:5151-5159
ISSN:	1558-2213 0733-8724
Popis:	In this paper, multidomain pseudospectral (MDPS) method is adopted to analyze the diffraction of electromagnetic waves by the metallic lamellar grating. This method is based on applying a spectral accuracy at the Chebyshev collocation points to the spatial derivatives in Helmholtz equation, and then dividing the computational domain into nonoverlapping subdomains. Finally, the physical boundary conditions at the subdomain interfaces enforce the subdomains to a global system. The numerical examples for 1-D binary gratings composed of different highly conducting materials are presented. The validity of results by MDPS is compared with commonly used rigorous coupled wave analysis for TM polarization. The numerical evidence shows that the developed method has better stability and higher efficiency.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2347beda6c3d1180f3cb29a0fccded66 https://doi.org/10.1109/jlt.2009.2027343 Zobrazit plný text záznamu