Simple and Improved Plasmonic Sensor Configuration Established on MIM Waveguide for Enhanced Sensing Performance

Herein, two simple configurations of Fano resonance-based plasmonic sensors are proposed for temperature and biosensing applications. The device optimization sensing performance numerically investigated via two-dimensional finite element method (2D-FEM). former configuration is quite based on the side-coupled circular cavity (SCCC), whereas in latter, encapsulated ring separated by a small gap known as (RECC). For applications, polydimethylsiloxane (PDMS) utilized thermal medium cavity. numerical analysis has revealed that sensitivity (S) SCCC RECC ~ −0.58 nm/°C −0.64 nm/°C, respectively. figure merit (FOM) another important parameter to analyze which around 8.6 1955.2 configuration, capabilities biosensor designs injecting dielectric materials different refractive indices ranges between 1.33 1.37. S sensor 1240 nm/RIU 1350 nm/RIU, respectively, with FOM 18.74 RIU−1 691 RIU−1. considered be straightforward fewer fabrication complications offers high performance.