Journal
OPTICS LETTERS
Volume 29, Issue 10, Pages 1069-1071Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.29.001069
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One-dimensional localized plasmons (channel polaritons) guided by a triangular groove on a metal substrate are investigated numerically by means of a finite-difference time-domain algorithm. Dispersion, existence conditions, and dissipation of these waves are analyzed. In particular, it is demonstrated that the localization of the predicted plasmons in acute grooves may be substantially stronger than what is allowed by the diffraction limit. As a result, the predicted waves may be significant for the development of new subwavelength waveguides and interconnectors for nano-optics and photonics. (C) 2004 Optical Society of America
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