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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 29, Iss. 11 — Nov. 1, 2012
  • pp: 3078–3086

On surface-plasmon-polariton waves guided by the interface of a metal and a rugate filter with a sinusoidal refractive-index profile. Part II: high-phase-speed solutions

Mahmoud R. M. Atalla, Muhammad Faryad, and Akhlesh Lakhtakia  »View Author Affiliations


JOSA B, Vol. 29, Issue 11, pp. 3078-3086 (2012)
http://dx.doi.org/10.1364/JOSAB.29.003078


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Abstract

In continuation of a previous paper [J. Opt. Soc. Am. B 27, 2218 (2010)], by solving a canonical boundary-value problem we found that the planar interface of a metal and a rugate filter can guide surface-plasmon-polariton (SPP) waves with phase speeds greater than the speed of light in free space. These SPP waves can be either p or s polarized, and can have extremely high phase speeds, but are very loosely bound to the metal/rugate-filter interface. In two practically implementable configurations with both partnering materials of finite thickness, both p- and s-polarized SPP waves with high phase speeds can be excited, provided that the thickness of the rugate filter is much larger than needed for SPP waves with low phase speeds.

© 2012 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(240.6690) Optics at surfaces : Surface waves
(350.2770) Other areas of optics : Gratings

ToC Category:
Optics at Surfaces

History
Original Manuscript: July 24, 2012
Manuscript Accepted: September 14, 2012
Published: October 18, 2012

Citation
Mahmoud R. M. Atalla, Muhammad Faryad, and Akhlesh Lakhtakia, "On surface-plasmon-polariton waves guided by the interface of a metal and a rugate filter with a sinusoidal refractive-index profile. Part II: high-phase-speed solutions," J. Opt. Soc. Am. B 29, 3078-3086 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-11-3078

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