Abstract
A sharp and asymmetric line shape is numerically predicted in a novel and compact plasmonic waveguide system. This system consists of a groove and a ring resonator coupled with a metal–insulator–metal waveguide. Due to the interaction of the narrow discrete resonance and a broad spectrum caused by the ring resonator and the groove, respectively, the transmission spectrum exhibits a sharp asymmetrical profile. Simulation results show that the spectral line shape can be easily tuned by changing the parameters of the structure. The physical features contribute to a highly efficient plasmonic nanosensor for refractive index sensing with the sensitivity of 1160 nm/RIU and a figure of merit of 3200. This plasmonic structure with such high figure of merits may find important applications in the on-chip nanosensors.
© 2015 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription