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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 7 — Apr. 8, 2013
  • pp: 8587–8595

Plasmonic wave propagation in silver nanowires: guiding modes or not?

Qiang Li and Min Qiu  »View Author Affiliations

Optics Express, Vol. 21, Issue 7, pp. 8587-8595 (2013)

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Propagation modes and single-guiding-mode conditions of one-dimensional silver nanowires based surface plasmon polariton (SPP) waveguides versus the operating wavelength (500-2000 nm) are investigated. For silver nanowires immersed in a SiO2 matrix, both short-range SPP (SRSPP)-like modes and long-range SPP (LRSPP)-like modes can be guided. However, only the LRSPP-like modes have cutoff radii. For silver nanowires on a SiO2 substrate, the LRSPP-like modes cannot be supported due to asymmetry. While for the SRSPP-like guiding mode, it has a cutoff radius for wavelength longer than 615 nm. For wavelength shorter than 615 nm, there is no cutoff radius for the guiding modes due to the appearance of the interface modes and thus the single-guiding-mode operation is always satisfied.

© 2013 OSA

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(250.5300) Optoelectronics : Photonic integrated circuits
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Optics at Surfaces

Original Manuscript: January 8, 2013
Revised Manuscript: March 2, 2013
Manuscript Accepted: March 25, 2013
Published: April 1, 2013

Qiang Li and Min Qiu, "Plasmonic wave propagation in silver nanowires: guiding modes or not?," Opt. Express 21, 8587-8595 (2013)

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