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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 12 — Jun. 8, 2009
  • pp: 10327–10334

Channel plasmon polaritons guided by graded gaps: closed-form solutions

Sergey I. Bozhevolnyi and Khachatur V. Nerkararyan  »View Author Affiliations

Optics Express, Vol. 17, Issue 12, pp. 10327-10334 (2009)

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Using the effective-index approximation along with the explicit expression for the propagation constant of gap surface plasmons established recently [Opt. Express 16, 2676-2684 (2008)], we develop an analytic description of channel plasmon polariton (CPP) modes guided along V-grooves and gaps between two metal cylindrical surfaces. The results obtained for V-grooves are compared with those reported previously. Dispersion of the main CPP characteristics is calculated for air-gold configurations, allowing one to design graded-gap waveguides for the single-mode operation supporting well-confined fundamental CPP modes in a broad wavelength range.

© 2009 OSA

OCIS Codes
(230.7380) Optical devices : Waveguides, channeled
(240.6680) Optics at surfaces : Surface plasmons
(250.5300) Optoelectronics : Photonic integrated circuits

ToC Category:
Optics at Surfaces

Original Manuscript: May 12, 2009
Revised Manuscript: May 29, 2009
Manuscript Accepted: May 31, 2009
Published: June 4, 2009

Sergey I. Bozhevolnyi and Khachatur V. Nerkararyan, "Channel plasmon polaritons guided by graded gaps: closed-form solutions," Opt. Express 17, 10327-10334 (2009)

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