Special Section: Selected Papers from the 2nd Mediterranean Conference on Nanophotonics

Plasmon modes on laminated nanomembrane-based waveguides

[+] Author Affiliations
Slobodan M. Vukovic

University of Belgrade, Institute of Physics, Zemun, Serbia 11080 Serbia

Zoran Jaksic

University of Belgrade, IHTM - Institute of Microelectronic Technologies and Single Crystals, Njegoseva 12, Belgrade, Serbia 11000 Serbia

Jovan Matovic

Vienna University of Technology, Institute of Sensors and Actuator Systems, Floragasse 7/ E366, Vienna A-1040 Austria

J. Nanophoton. 4(1), 041770 (July 21, 2010). doi:10.1117/1.3478229
History: Received February 1, 2010; Revised June 24, 2010; Accepted June 25, 2010; July 21, 2010; Online July 21, 2010
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Abstract

We studied the propagation of plasmonic modes along planar multilayer metal-dielectric structures with finite number of bi-layer unit cells. The dispersion relations for various investigated waveguide structures with the multilayer core and symmetric or asymmetric cladding have been analyzed. In the case of symmetric metallic cladding we have found both TE and TM modes within the light cone, while TM modes only exist outside the light cone. Both symmetric and asymmetric dielectric claddings support modes outside the light cone and of TM-polarization only. Formation of photonic bands and gaps, the structure of their edge lines, and the behavior of modes that cross the edge lines has been investigated. In the subwavelength regime, we have found ordinary surface plasmon polariton dispersion in the forbidden gap that is created via coalescence of the two modes that cross the neighboring band-gap edges. One of those modes can exhibit negative group velocity.

© 2010 Society of Photo-Optical Instrumentation Engineers

Topics

Plasmons ; Waveguides

Citation

Slobodan M. Vukovic ; Zoran Jaksic and Jovan Matovic
"Plasmon modes on laminated nanomembrane-based waveguides", J. Nanophoton. 4(1), 041770 (July 21, 2010). ; http://dx.doi.org/10.1117/1.3478229


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