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22 December 2015 Efficient butt-coupling of surface plasmons on a silver-air interface
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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.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Caitlin Fisher, Lindsay C. Botten, Christopher G. Poulton, Ross C. McPhedran, and C. Martijn de Sterke "Efficient butt-coupling of surface plasmons on a silver-air interface", Proc. SPIE 9668, Micro+Nano Materials, Devices, and Systems, 966824 (22 December 2015); https://doi.org/10.1117/12.2202452
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