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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 18 — Sep. 1, 2008
  • pp: 13617–13623

Long-range spiralling surface plasmon modes on metallic nanowires

M. A. Schmidt and P. St.J. Russell  »View Author Affiliations

Optics Express, Vol. 16, Issue 18, pp. 13617-13623 (2008)

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We discuss the characteristics of surface plasmon modes guided on metallic nanowires of circular cross-section embedded in silica glass. Under certain conditions such wires allow low-loss guided modes, full account being taken of ohmic losses in the metal. We find that these modes can be bound to the wire even when the real part of their axial refractive index is less than that of the surrounding dielectric. We assess in detail the accuracy of a simple model in which SPs are viewed as spiralling around the nanowire in a helical path, forming modes at certain angles of pitch. The results are relevant for understanding the behavior of light in two-dimensional arrays of metallic nanowires in fiber form.

© 2008 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(240.6680) Optics at surfaces : Surface plasmons
(160.4236) Materials : Nanomaterials
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Optics at Surfaces

Original Manuscript: May 27, 2008
Revised Manuscript: August 13, 2008
Manuscript Accepted: August 17, 2008
Published: August 20, 2008

M. A. Schmidt and P. S. Russell, "Long-range spiralling surface plasmon modes on metallic nanowires," Opt. Express 16, 13617-13623 (2008)

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