Journal
OPTICS EXPRESS
Volume 16, Issue 2, Pages 1232-1237Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.16.001232
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We introduce two nanoscale thickness dielectric layers on the top and bottom sides of a finite width and finite thickness metal microstrip and have calculated the fundamental symmetric plasmon-polariton mode of the 2D metal-dielectric layer waveguide. The dielectric nanolayers provide an additional degree of freedom to control the plasmon-polariton mode. When the dielectric constant of the nanolayers is smaller than that of the cladding dielectric, the travel range of the fundamental symmetric plasmon-polariton mode is extended with the trade-off of the mode confinement. The figure of merit of the mode increases as the travel range extends. (c) 2008 Optical Society of America.
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