A Rational-Fraction Dispersion Model for Efficient Simulation of Dispersive Material in FDTD Method

Author

Han, Lin ; Zhou, Dong ; Li, Kang ; Li, Xun ; Huang, Wei-Ping

Author_Institution

Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, ON, Canada

Volume

30

Issue

13

fYear

2012

fDate

7/1/2012 12:00:00 AM

Firstpage

2216

Lastpage

2225

Abstract

A novel rational-fraction dispersion model is proposed for simulation of optical properties of arbitrary linear dispersive media over a wide wavelength range. A generally applicable method is proposed for estimating the parameters of this model. It is demonstrated that the rational-fraction dispersion model can fit the relative permittivity data of a material accurately and efficiently in a wide wavelength range. The new model is implemented in the finite-difference time-domain method and is applied as a powerful and computationally efficient tool for simulating nano-particles of dispersive materials in a wide wavelength range of light.

Keywords

dispersive media; finite difference time-domain analysis; nanoparticles; optical materials; parameter estimation; permittivity; FDTD; arbitrary linear dispersive media; dispersive material; finite-difference time-domain method; nanoparticles; parameter estimation; rational-fraction dispersion model; relative permittivity; Computational modeling; Dispersion; Equations; Finite difference methods; Materials; Mathematical model; Time domain analysis; Dispersion; finite-difference method; nanoparticles; time-domain modeling;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2012.2195476

Filename

6187666