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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea

| PUBLISHED BY THE OPTICAL SOCIETY OF KOREA

  • Vol. 17, Iss. 6 — Dec. 1, 2013
  • pp: 538–542

Similarity Analysis for the Dispersion of Spiraling Modes on Metallic Nanowire to a Planar Thin Metal Layer

Dong-Jin Lee, Se-Geun Park, Seung-Gol Lee, and Beom-Hoan O  »View Author Affiliations


Journal of the Optical Society of Korea, Vol. 17, Issue 6, pp. 538-542 (2013)


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Abstract

We propose a simple model to elucidate the dispersion behavior of spiraling modes on silver nanowire by finding correspondence parameters and building a simple equivalent relationship with the planar insulator-metal-insulator geometry. The characteristics approximated for the proposed structure are compared with the results from an exact solution obtained by solving Maxwell's equation in cylindrical coordinates. The effective refractive index for our proposed equivalent model is in good agreement with that for the exact solution in the 400-2000 nm wavelength range. In particular, when the radius of the silver nanowire is 100 nm, the calculated index shows typical improvements; the average percentage error for the real part of the effective refractive index is reduced to only 5% for the <TEX>$0^{th}$</TEX> order mode (11.9% in previous results) and 1.5% for the <TEX>$1^{st}$</TEX> order mode (24.8% in previous results) in the 400-800 nm wavelength range. This equivalent model approach is expected to provide further insight into understanding the important behavior of nanowire waveguides.

© 2013 Optical Society of Korea

OCIS Codes
(230.7370) Optical devices : Waveguides
(240.6680) Optics at surfaces : Surface plasmons
(250.5403) Optoelectronics : Plasmonics

History
Original Manuscript: October 14, 2013
Revised Manuscript: November 21, 2013
Manuscript Accepted: November 21, 2013
Published: December 25, 2013

Citation
Dong-Jin Lee, Se-Geun Park, Seung-Gol Lee, and Beom-Hoan O, "Similarity Analysis for the Dispersion of Spiraling Modes on Metallic Nanowire to a Planar Thin Metal Layer," J. Opt. Soc. Korea 17, 538-542 (2013)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-17-6-538


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