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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 19 — Sep. 14, 2009
  • pp: 16792–16800

Modeling of enhanced field confinement and scattering by optical wire antennas

Andrea Locatelli, Costantino De Angelis, Daniele Modotto, Stefano Boscolo, Francesco Sacchetto, Michele Midrio, Antonio-D. Capobianco, Filippo M. Pigozzo, and Carlo G. Someda  »View Author Affiliations


Optics Express, Vol. 17, Issue 19, pp. 16792-16800 (2009)
http://dx.doi.org/10.1364/OE.17.016792


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Abstract

We describe the application of full-wave and semi-analytical numerical tools for the modeling of optical wire antennas, with the aim of providing novel guidelines for analysis and design. The concept of antenna impedance at optical frequencies is reviewed by means of finite-element simulations, whereas a surface-impedance integral equation is derived in order to perform an accurate and efficient calculation of the current distribution, and thereby to determine the equivalent-circuit parameters. These are introduced into simple circuits models, directly borrowed from radio frequency, which are applied in order to model the phenomena of enhanced field confinement at the feed gap and light scattering by optical antennas illuminated by plane waves.

© 2009 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(240.6680) Optics at surfaces : Surface plasmons
(260.3910) Physical optics : Metal optics
(350.4238) Other areas of optics : Nanophotonics and photonic crystals
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Integrated Optics

History
Original Manuscript: July 7, 2009
Revised Manuscript: July 30, 2009
Manuscript Accepted: July 31, 2009
Published: September 4, 2009

Citation
Andrea Locatelli, Costantino De Angelis, Daniele Modotto, Stefano Boscolo, Francesco Sacchetto, Michele Midrio, Antonio-D. Capobianco, Filippo M. Pigozzo, and Carlo G. Someda, "Modeling of enhanced field confinement and scattering by optical wire antennas," Opt. Express 17, 16792-16800 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-19-16792


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