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Proceedings Paper

Propagation properties of surface plasmon along metal nano-aperture and nano-wire
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Paper Abstract

Surface plasmon propagation properties for nano-sized metal aperture and nano-wire structures are studied based on the waveguide theory. It is verified that there are only TM0 and HE1 mode existing in both structures. For nano-wire structure, however, there is no cut-off radii for both TM0 and HE1 mode. On the contrast, there is a cut-off radius for nano-sized silver aperture structure, and even more, there are several characteristic radius coefficients a/ λ, -0.32, 0.73. For each section, the EM wave may takes on different features, e.g., totally-bounded features along the aperture interface for a/ λ >0.73, or oscillation inside core or strong attenuation along z direction for 0.32<a/ λ<0.73). HE1 mode of metal aperture doesn't show cut-off radius as well, but the wave-number along z direction monotonically increase with the radius coefficient a/ λ in contrast with existence of a characteristic radius coefficient a/ λ of 0.41 for nano-wire.

Paper Details

Date Published: 22 June 2006
PDF: 5 pages
Proc. SPIE 6282, Optical Data Storage 2006, 62821R (22 June 2006); doi: 10.1117/12.685180
Show Author Affiliations
HongXing Yuan, Data Storage Institute (Singapore)
B. X. Xu, Data Storage Institute (Singapore)
T. C. Chong, Data Storage Institute (Singapore)


Published in SPIE Proceedings Vol. 6282:
Optical Data Storage 2006

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