Optical guided dispersions and subwavelength transmissions in dispersive plasmonic circular holes
Abstract
The light transmission through a dispersive plasmonic circular hole is numerically investigated with an emphasis on its subwavelength guidance. For a better understanding of the effect of the hole diameter on the guided dispersion characteristics, the guided modes, including both the surface plasmon polariton mode and the circular waveguide mode, are studied for several hole diameters, especially when the metal cladding has a plasmonic frequency dependency. A brief comparison is also made with the guided dispersion characteristics of a dispersive plasmonic gap [K. Y. Kim, et al., Opt. Express 14, 320-330 (2006)], which is a planar version of the present structure, and a circular waveguide with perfect electric conductor cladding. Finally, the modal behavior of the first three TM-like principal modes with varied hole diameters is examined for the same operating mode.
Keywords
Cite
@article{arxiv.0902.3309,
title = {Optical guided dispersions and subwavelength transmissions in dispersive plasmonic circular holes},
author = {Ki Young Kim and Young Ki Cho and Heung-Sik Tae and Jeong-Hae Lee},
journal= {arXiv preprint arXiv:0902.3309},
year = {2009}
}
Comments
20 pages, 5 figures, 1 table