%0 Journal Article
%T Plasmonic coupled-cavity system for enhancement of surface plasmon localization in plasmonic detectors
%A Kelvin J. A. Ooi
%A Ping Bai
%A Ming Xia Gu
%A Lay Kee Ang
%J Physics
%D 2013
%I arXiv
%R 10.1088/0957-4484/23/27/275201
%X A plasmonic coupled-cavity system, which consists of a quarter-wave coupler cavity, a resonant Fabry-Perot detector nanocavity, and an off-resonant reflector cavity, is used to enhance the localization of surface plasmons in a plasmonic detector. The coupler cavity is designed based on transmission line theory and wavelength scaling rules in the optical regime, while the reflector cavity is derived from off-resonant resonator structures to attenuate transmission of plasmonic waves. We observed strong coupling of the cavities in simulation results, with an 86% improvement of surface plasmon localization achieved. The plasmonic coupled-cavity system may find useful applications in areas of nanoscale photodetectors, sensors, and an assortment of plasmonic-circuit devices.
%U http://arxiv.org/abs/1312.7632v1