Long-range surface plasmon polaritons on asymmetric double-electrode structures
- Authors
- Joo, Yang Hyun; Jung, Myoung Jin; Yoon, Jaewoong; Song, Seok Ho; Won, Hyong Sik; Park, Suntak; Ju, Jung Jin
- Issue Date
- Apr-2008
- Publisher
- AMER INST PHYSICS
- Citation
- APPLIED PHYSICS LETTERS, v.92, no.16, pp.1 - 3
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED PHYSICS LETTERS
- Volume
- 92
- Number
- 16
- Start Page
- 1
- End Page
- 3
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/172104
- DOI
- 10.1063/1.2913015
- ISSN
- 0003-6951
- 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.
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