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Journal Article Long-range Surface Plasmon Polaritons on Asymmetric Double-electrode Structures
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Authors
Yang Hyun Joo, Myoung Jin Jung, Jae Woong Yoon, Seok Ho Song, Hyong Sik Won, Sun Tak Park, Jung Jin Ju
Issue Date
2008-04
Citation
Applied Physics Letters, v.92, no.16, pp.1-3
ISSN
0003-6951
Publisher
American Institute of Physics (AIP)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1063/1.2913015
Project Code
08MB2200, Nano flexible opto-electric PCB module for portable display, Ju Jung Jin
Abstract
An asymmetric double-electrode structure composed of metal strips separated by a dielectric core layer, all on a metal slab, is proposed as a long-range surface plasmon-polariton (LR-SPP) waveguide. LR-SPP modes on asymmetric structures, including straight, S-bended, and Y-branched strips, are found by far-field measurement to be consistent with theoretical estimates. The proposed structure is inherently free from a symmetry requirement on dielectric constants between the core and cladding materials, therefore, an asymmetric double-electrode waveguide which substitutes a nonlinear medium or biofluid for the core dielectric may be essential to realization of SPP nonlinear devices or biosensors in a long-range manner. © 2008 American Institute of Physics.
KSP Keywords
Asymmetric structure, Cladding materials, Dielectric Constant, Electrode structure, Far-field measurement, Long-range surface plasmon polaritons, Nonlinear devices, Nonlinear medium, Surface plasmon(SP), Theoretical estimates, Y-branched