Fano resonant plasmonic systems: Functioning principles and applications

B. Gallinet, A. Lovera, T. Siegfried, H. Sigg, O. J. F. Martin
Using a generalization of Fano formula that includes the intrinsic losses associated with metals, we retrieve the underlying modal structure that produces Fano resonances from the interference between a bright and a dark mode. This knowledge is used to determine the most efficient plasmonic system for a specific application by tuning its mode of operation from weak coupling to best energy storage or strong coupling. This approach is illustrated with examples from sensing.
doi:10.1063/1.4750081 fatcat:jb2ocux55vcy3n5kohywtho37a