Title :
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
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;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2408616
