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

Francesco Chiadini; Vincenzo Fiumara; Antonio Scaglione; Akhlesh Lakhtakia

doi:10.1117/1.JNP.9.093060

17 August 2015 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

Francesco Chiadini, Vincenzo Fiumara, Antonio Scaglione, Akhlesh Lakhtakia

Author Affiliations +

Journal of Nanophotonics, Vol. 9, Issue 1, 093060 (August 2015). https://doi.org/10.1117/1.JNP.9.093060

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.

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Francesco Chiadini, Vincenzo Fiumara, Antonio Scaglione, and Akhlesh Lakhtakia "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," Journal of Nanophotonics 9(1), 093060 (17 August 2015). https://doi.org/10.1117/1.JNP.9.093060

Published: 17 August 2015

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