Experimental demonstration of fiber-accessible metal nanoparticle plasmon waveguides for planar energy guiding and sensing

Stefan A. Maier, Michelle D. Friedman, Paul E. Barclay, Oskar Painter

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Abstract

Experimental evidence of mode-selective evanescent power coupling at telecommunication frequencies with efficiencies up to 75% from a tapered optical fiber to a metal nanoparticle plasmon waveguide is presented. The waveguide consists of a two-dimensional square lattice of lithographically defined Au nanoparticles on an optically thin silicon membrane. The dispersion and attenuation properties of the waveguide are analyzed using the fiber taper. The high efficiency of power transfer into these waveguides solves the coupling problem between conventional optics and plasmonic devices and could lead to the development of highly efficient plasmonic sensors and optical switches.

Original languageEnglish
Article number071103
Number of pages3
JournalApplied Physics Letters
Volume86
Issue number7
DOIs
Publication statusPublished - 14 Feb 2005
Externally publishedYes

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