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International Journal of Antennas and Propagation
Volume 2014, Article ID 429425, 12 pages
http://dx.doi.org/10.1155/2014/429425
Research Article

Analysis of Nanodipoles in Optical Nanocircuits Fed by Gaussian Beam

Department of Electrical Engineering, Federal University of Para, Avenida Augusto Corrêa No. 01, 66075-900 Belém, PA, Brazil

Received 24 November 2013; Revised 11 April 2014; Accepted 12 April 2014; Published 17 June 2014

Academic Editor: Hon Tat Hui

Copyright © 2014 Karlo Costa et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We analyze impedance matching and excitation properties of a plasmonic optical nanocircuit composed by a receiving and an emitting dipole connected by a two-wire optical transmission line. The circuit is fed by a circular Gaussian beam focused on the receiving dipole. The numerical analysis is performed by linear method of moments with a given surface impedance of gold cylindrical conductors. With this model, we analyze the variation of standing-wave response along the circuit in function of some geometrical parameters. We present some conclusions concerning impedance matching between the transmission line and the emitting dipole and coupling between the receiving dipole and the incident Gaussian beam.