Frequency-dependent LOD-FDTD implementations for dispersive media

The recursive convolution (RC), piecewise linear recursive convolution (PLRC), and auxiliary differential equation (ADE) techniques are newly introduced into the implicit locally one-dimensional finite-difference time-domain method (LOD-FDTD) for the efficient analysis of dispersive media. The perfo...

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Bibliographic Details
Published inElectronics letters Vol. 42; no. 19; pp. 1084 - 1086
Main Authors Shibayama, J, Takahashi, R, Yamauchi, J, Nakano, H
Format Journal Article
LanguageEnglish
Published 14.09.2006
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Summary:The recursive convolution (RC), piecewise linear recursive convolution (PLRC), and auxiliary differential equation (ADE) techniques are newly introduced into the implicit locally one-dimensional finite-difference time-domain method (LOD-FDTD) for the efficient analysis of dispersive media. The performance of each method is investigated through analysis of an optical waveguide with a metal cladding expressed in a Drude model. It is shown that the results of the PLRC- and ADE-LOD-FDTDs with t=10tCFL, in which tCFL is determined by the Courant-Friedrich-Levy condition, agree well with the result of the explicit FDTD, with the computational time being reduced to less than 30% of that of the explicit FDTD.
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ISSN:0013-5194
DOI:10.1049/el:20062383