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Journal Articles Applied Physics Letters Year : 2010

Dielectric-loaded surface plasmon polariton waveguides on a finite-width metal strip

Abstract

We investigate the guiding properties of a dielectric-loaded surface plasmon polariton waveguide on a finite-width metal strip. The guided mode is characterized by leakage radiation microscopy for different metal strip widths. We show a strong mode attenuation for metal strip widths below 1.75 mu m at telecom wavelength lambda=1.55 mu m. We estimate the minimal width using numerical methods and propose an original interpretation. Good agreement with the measured data is achieved. The determination of this critical width is a prerequisite for designing miniaturized plasmonics devices.
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Dates and versions

hal-00472375 , version 1 (11-04-2010)

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Jonathan Grandidier, Gérard Colas Des Francs, Laurent Markey, Alexandre Bouhelier, Sebastien Massenot, et al.. Dielectric-loaded surface plasmon polariton waveguides on a finite-width metal strip. Applied Physics Letters, 2010, 96, pp.063105. ⟨10.1063/1.3300839⟩. ⟨hal-00472375⟩
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