Open AccessSurface plasmon polariton propagation and combination in Y-shaped metallic channels
Author(s) -
Hongtao Gao,
Haofei Shi,
Changtao Wang,
Chunlei Du,
Xiangang Luo,
Qiling Deng,
Yaoguang Lv,
Xiangdi Lin,
Hongbao Yao
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.010795
Subject(s) - surface plasmon polariton , surface plasmon , optics , finite difference time domain method , materials science , polariton , scattering , localized surface plasmon , plasmon , light scattering , absorption (acoustics) , total internal reflection , physics
The propagation and combination of surface plasmon polaritons (SPPs) in Y-shaped metallic nanochannels are investigated numerically via finite difference time domain (FDTD). It is shown that the behavior of SPPs in nano-size channels resembles that of light guiding in conventional waveguides, and SPPs can also be combined effectively with appropriately designed structures. The loss associated with metal absorption and scattering with the multiple reflections between slit openings on the bend angle are analyzed numerically. The Fabry-Perot cavity effect displayed by SPPs traveling in channels with finite length is discussed as well.