Plasmonic coupled-cavity system for enhancement of surface plasmon localization in plasmonic detectors.
A plasmonic coupled-cavity system, which consists of a quarter-wave coupler cavity, a resonant Fabry-Pérot 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.
Plasmonics and Nanointegration Group, A*STAR Institute of High Performance Computing, 1 Fusionopolis Way, #16-16 Connexis, 138632, Singapore.
K J A
KJ
Ooi
P
P
Bai
M X
MX
Gu
L K
LK
Ang
D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D008962:Models, Theoretical; D010783:Photometry / Q000295:instrumentation*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*