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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 14 — Jul. 4, 2011
  • pp: 13464–13479

Efficient excitation of surface plasmons in metal nanorods using large longitudinal component of high index nano fibers

Yinlan Ruan, Shahraam Afshar, and Tanya M. Monro  »View Author Affiliations

Optics Express, Vol. 19, Issue 14, pp. 13464-13479 (2011)

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We report theoretical calculations of the mode fields of high index lead silicate and silicon nano fibers, and show that their strong longitudinal component enables efficient excitation of surface plasmons within a silver nanorod placed at the fiber tip. An excitation efficiency 1600 times higher than that of the standard single mode fibers has been achieved using a 350nm diameter silicon fiber at 1.1μm wavelength, while a factor of 640 times higher efficiency is achieved for a 400nm diameter lead silicate F2 glass fiber. The strong localized field emerging from the end of the rod serves as a nano-scale source with adjustable beam width, and such sources offer a new approach to high-resolution microscopy, particle manipulation and sensing.

© 2011 OSA

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Optics at Surfaces

Original Manuscript: April 6, 2011
Revised Manuscript: June 6, 2011
Manuscript Accepted: June 13, 2011
Published: June 28, 2011

Virtual Issues
Vol. 6, Iss. 8 Virtual Journal for Biomedical Optics

Yinlan Ruan, Shahraam Afshar, and Tanya M. Monro, "Efficient excitation of surface plasmons in metal nanorods using large longitudinal component of high index nano fibers," Opt. Express 19, 13464-13479 (2011)

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