Open AccessLong-range channel plasmon polaritons in thin metal film V-grooves
Author(s) -
Sang-Jun Lee,
Sangin Kim
Publication year - 2011
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.009836
Subject(s) - surface plasmon polariton , materials science , polariton , optics , plasmon , refractive index , dielectric , surface plasmon , groove (engineering) , thin film , optoelectronics , physics , nanotechnology , metallurgy
We numerically investigate the propagation characteristics of guided modes in a thin metal film V-groove embedded in a dielectric medium, with a particular emphasis on long-ranging channel plasmon polaritons (LR-CPPs). The LR-CPP shows several orders of magnitude larger propagation length than the previously studied short-range channel plasmon polariton (SR-CPP). Moreover, the LR-CPP possesses a peculiar mode cutoff mechanism when surrounding dielectric media are asymmetric and this makes its propagation characteristics very sensitive to index change of the surrounding dielectric media.