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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 15 — May. 20, 2009
  • pp: 2847–2852

Modal characteristics of coupled metallic nanoscale rectangular apertures

Triranjita Srivastava and Arun Kumar  »View Author Affiliations


Applied Optics, Vol. 48, Issue 15, pp. 2847-2852 (2009)
http://dx.doi.org/10.1364/AO.48.002847


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Abstract

We examine the modal characteristics of coupled metallic nanoscale rectangular apertures using a simple and accurate separation of variables method, recently proposed by us for a single aperture [ Opt. Lett. 33, 333 (2008)]. The study shows that the coupling between the antisymmetric surface plasmon polariton (SPP) modes of the two rectangular apertures results in a coupled SPP mode with very large propagation length, larger than 1 mm at the wavelength of 0.633 μm , provided the aperture size and the separation are sufficiently large. The effective indices and the propagation lengths of various coupled SPP modes are presented.

© 2009 Optical Society of America

OCIS Codes
(230.7370) Optical devices : Waveguides
(240.6680) Optics at surfaces : Surface plasmons
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Optics at Surfaces

History
Original Manuscript: February 23, 2009
Revised Manuscript: April 13, 2009
Manuscript Accepted: April 15, 2009
Published: May 11, 2009

Citation
Triranjita Srivastava and Arun Kumar, "Modal characteristics of coupled metallic nanoscale rectangular apertures," Appl. Opt. 48, 2847-2852 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-15-2847


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