New Plasmon Waveguides Composed of Twin Metal Wedges with a Nano Gap |
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| Authors: | Masanobu Haraguchi David F. P. Pile Toshihiro Okamoto Masuo Fukui Dmitri K. Gramotnev |
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| Affiliation: | (1) Department of Optical Science and Technology, The University of Tokushima, 2-1 Minami-josanjima, Tokushima 770-8506, Japan;(2) School of Physical and Chemical Sciences, Queensland University of Technology, GPO Box 2434, Brisbane, QLD 4001, Australia |
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| Abstract: | We have numerically shown the existence of coupled wedge plasmons (CWPs) which propagates along a nano gap of a twin metal wedge. The CWPs are formed by wedge plasmons which can interact with each other. The dispersion relations of the wavenumber, propagation distance, and beam area of CWPs, are described and show that the characteristics of CWPs are similar to those of wedge plasmons and of gap plasmons. We also propose a new plasmon waveguide composed of twin metal wedges with a nano gap. |
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| Keywords: | plasmon plasmon waveguide coupled wedge plasmon metal wedge nano gap silver finite difference time domain |
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