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Coupled Transmission Line Model for Planar Metal-Dielectric-Metal Plasmonic Structures: Inclusion of the First Non-Principal Mode

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5 Author(s)
Meisam Bahadori ; Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran ; Ali Eshaghian ; Mohsen Rezaei ; Hossein Hodaei
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A coupled transmission line model whose parameters are analytically given is provided for fast and accurate analysis of miscellaneous plasmonic structures with metal-dielectric-metal (MDM) arrangement. The coupling of surface plasmons supported by the planar metal-dielectric interfaces is included in the proposed model and thereby the effects of the first non-principal mode of the MDM waveguide are considered. In particular, MDM bends, junctions, and stubs are studied. Using rigorous numerical solutions, e.g., the finite-element method and the finite-difference time-domain, it is shown that the proposed model is accurate in all those cases.

Published in:

IEEE Journal of Quantum Electronics  (Volume:49 ,  Issue: 9 )