A Partially Implicit FDTD Method for the Wideband Analysis of Spoof Localized Surface Plasmons

Author

Fujita, Kazuhiro

Author_Institution

Tech. Comput. Solutions Unit, Fujitsu Ltd., Chiba, Japan

Volume

27

Issue

10

fYear

2015

fDate

May15, 15 2015

Firstpage

1124

Lastpage

1127

Abstract

A partially implicit finite-difference time- domain (FDTD) method with relaxed stability condition is formulated on the basis of combining the implicit Newmark-Beta and the explicit leapfrog time integrations. Its stability is investigated by the Fourier method. The 2-D open and closed structures supporting spoof localized surface plasmons are analyzed with the presented method. The computational time is reduced in comparison with the traditional explicit FDTD while maintaining the same level of accuracy.

Keywords

Fourier transform optics; finite difference time-domain analysis; microwave photonics; surface plasmon resonance; 2-D open structures; Fourier method; closed structures; finite-difference time-domain method; leapfrog time integrations; partially implicit FDTD method; relaxed stability condition; spoof localized surface plasmons; wideband analysis; Finite difference methods; Numerical stability; Plasmons; Power system stability; Stability analysis; Thermal stability; Time-domain analysis; FDTD method; THz waves; localized surface plasmons; semi-implicit scheme; spoof plasmons;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2015.2408616

Filename

7054441