Efficient butt-coupling of surface plasmons on a silver-air interface
Date
2015
Authors
Fisher, Caitlin
Botten, Lindsay
Poulton, Christopher
McPhedran, Ross
de Sterke, C Martijn
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SPIE
Abstract
Butt-coupling of light into a surface plasmon is a simple and compact coupling method with a range of potential uses in photonic circuitry. Although butt-coupling has been successfully implemented in many coupling configurations, the coupling effectiveness is not fully understood. Here, we present a semi-analytical study which models the coupling efficiency of an incident beam into a surface plasmon on silver in the presence of loss using an projection method in one dimension. We find that the coupling efficiencies for silver between the wavelengths of 0:38-1:6 µm reach 77-88% with optimum incident beam parameters.
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Proceedings of SPIE - The International Society for Optical Engineering
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Conference paper
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Open Access
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