Fundamental LOD-BOR-FDTD Method for the Analysis of Plasmonic Devices

Jun SHIBAYAMA  Takuto OIKAWA  Tomoyuki HIRANO  Junji YAMAUCHI  Hisamatsu NAKANO  

IEICE TRANSACTIONS on Electronics   Vol.E97-C   No.7   pp.707-709
Publication Date: 2014/07/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E97.C.707
Type of Manuscript: BRIEF PAPER
alternating-direction implicit (ADI),  Drude-Lorentz model,  locally one-dimensional (LOD),  plasma wave,  trapezoidal recursive convolution (TRC) technique,  

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The body-of-revolution finite-difference time-domain method (BOR-FDTD) based on the locally one-dimensional (LOD) scheme is extended to a frequency-dependent version for the analysis of the Drude and Drude-Lorentz models. The formulation is simplified with a fundamental scheme, in which the number of arithmetic operations is reduced by 40% in the right-hand sides of the resultant equations. Efficiency improvement of the LOD-BOR-FDTD is discussed through the analysis of a plasmonic rod waveguide and a plasmonic grating.