Open AccessModeling and design of nano-plasmonic structures using transmission line modeling
Author(s) -
Osman Ahmed,
Mohamed A. Swillam,
Mohamed H. Bakr,
Xun Li
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.021784
Subject(s) - node (physics) , perfectly matched layer , optics , finite difference time domain method , surface plasmon polariton , transmission line , transmission (telecommunications) , time domain , plasmon , computer science , line (geometry) , nano , boundary value problem , surface plasmon , electronic engineering , materials science , physics , acoustics , telecommunications , engineering , geometry , mathematics , quantum mechanics , composite material , computer vision
For the first time, we demonstrate the application of the time domain transmission line method (TLM) to accurate modeling of surface plasmon polariton (SPP) structures. The constructed TLM node allows for modeling of dispersive materials through simple time-difference equations. Using such node, an ultra-wide band excitation can be applied to obtain the response over the band of interest. Bérenger's perfectly matched layer (PML) boundary condition can readily be implemented using the same node. We illustrate our TLM approach through the modeling of different challenging structures including SPPs filters and focusing structures.