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Journal of Nanophotonics

Composite surface-plasmon-polariton waves guided by a thin metal layer sandwiched between a homogeneous isotropic dielectric material and a periodically multilayered isotropic dielectric material
Author(s): Francesco Chiadini; Vincenzo Fiumara; Antonio Scaglione; Akhlesh Lakhtakia
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Paper Abstract

Multiple p- and s-polarized compound surface-plasmon-polariton (SPP) waves at a fixed frequency can be guided by a structure consisting of a metal layer sandwiched between a homogeneous isotropic dielectric (HID) material and a periodic multilayered isotropic dielectric (PMLID) material. For any thickness of the metal layer, at least one compound SPP wave must exist. It possesses the p-polarization state, and is strongly bound to the metal/HID interface when the metal thickness is large but to both metal/dielectric interfaces when the metal thickness is small. When the metal layer vanishes, this compound SPP wave transmutes into a Tamm wave. Additional compound SPP waves exist, depending on the thickness of the metal layer, the relative permittivity of the HID material, and the period and composition of the PMLID material. Some of these are p-polarized, the others are s-polarized. All of them differ in phase speed, attenuation rate, and field profile, even though all are excitable at the same frequency. The multiplicity and dependence of the number of compound SPP waves on the relative permittivity of the HID material when the metal layer is thin could be useful for optical sensing applications and intrachip plasmonic optical communication.

Paper Details

Date Published: 17 August 2015
PDF: 15 pages
J. Nanophoton. 9(1) 093060 doi: 10.1117/1.JNP.9.093060
Published in: Journal of Nanophotonics Volume 9, Issue 1
Show Author Affiliations
Francesco Chiadini, Univ. degli Studi di Salerno (Italy)
Vincenzo Fiumara, Univ. degli Studi della Basilicata (Italy)
Antonio Scaglione, Univ. degli Studi di Salerno (Italy)
Akhlesh Lakhtakia, The Pennsylvania State Univ. (United States)


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