Electromagnetic energy transport along arrays of closely spaced metal rods as an analogue to plasmonic devices

Stefan A. Maier, Mark L. Brongersma, Harry A. Atwater

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Abstract

The transport of electromagnetic energy along structures consisting of arrays of closely spaced metal rods (spacing = 0.2cm) was investigated in the microwave regime at 8.0GHz(λ = 3.7cm). The dispersion relation shows that information transport occurs at a group velocity of 0.6c. The electromagnetic energy is highly confined to the arrays (90% within a distance of 0.05λ from the array). The propagation loss in a straight array is 3 dB/8 cm. Routing of energy around 90° corners is possible with a power loss of 3-4 dB. Analogies to plasmon wires consisting of arrays of nm-size metal clusters are discussed.

Original languageEnglish
Pages (from-to)16-18
Number of pages3
JournalApplied Physics Letters
Volume78
Issue number1
DOIs
Publication statusPublished - 1 Jan 2001
Externally publishedYes

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