Open AccessTunable coupling-induced transparency band due to coupled localized electric resonance and quasiguided photonic mode in hybrid plasmonic system
Author(s) -
Jietao Liu,
Baiqing Xu,
Haifeng Hu,
Jing Zhang,
Xin Wei,
Yun Xu,
Guofeng Song
Publication year - 2013
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.21.013386
Subject(s) - plasmon , materials science , optics , optoelectronics , electromagnetically induced transparency , resonance (particle physics) , photonics , extraordinary optical transmission , coupled mode theory , transparency (behavior) , wavelength , photonic crystal , waveguide , negative refraction , metamaterial , surface plasmon , surface plasmon polariton , refractive index , physics , particle physics , political science , law
A numerical and theoretical study is presented on the exhibition of tunable narrow band coupled-induced transparency phenomenon in a hybrid waveguide-plasmon system consisting of gold twin nanowires array embedded in a slab waveguide. We show that, at slightly non-normal incidence, a properly designed splitting of transmission with narrow transparency peaks may occur at a given wavelength, depending on the angle of incidence. This leads to the wavelength-selective high quality coupled-induced transparency resonance at optical frequencies. By adjusting the gap distance of the pair gratings, the coupled-induced transparency band can be switched between on-state and off-state, which provides us possibilities to develop controllable plasmonic functional devices employing plasmonic nanostructures.