Open AccessOptical properties of multilayer metal-dielectric nanofilms with all-evanescent modes
Author(s) -
Simin Feng,
J. M. Elson,
P. L. Overfelt
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.13.004113
Subject(s) - materials science , dielectric , surface plasmon , photonic crystal , transmission coefficient , optics , extraordinary optical transmission , quantum tunnelling , stacking , resonator , wavelength , optoelectronics , excitation , plasmon , guided mode resonance , oscillation (cell signaling) , surface plasmon polariton , transmission (telecommunications) , physics , diffraction grating , genetics , nuclear magnetic resonance , quantum mechanics , biology , electrical engineering , engineering
We present a systematic study of mode characteristics of multilayer metal-dielectric (M-D) nanofilm structures. This structure can be described as a coupled-plasmon-resonantwaveguide (CPRW), a special case of coupled-resonator optical waveguide (CROW). Similar to a photonic crystal, the M-D is periodic, but there is a major difference in that the fields are evanescent everywhere in the M-D structure as in a nanoplasmonic structure. The transmission coefficient exhibits periodic oscillation with increasing number of periods. As a result of surface-plasmon-enhanced resonant tunneling, a 100% transmission occurs periodically at certain thicknesses of the M-D structure, depending on the wavelength, lattice constants, and excitation conditions. This structure indicates that a transparent material can be composed from non-transparent materials by alternatively stacking different materials of thin layers. The general properties of the CPRW and resonant tunneling phenomena are discussed.