Vertical Coupled Metal- Insulator -Metal(Mim)Optical Waveguide For Sub Wavelength Light Confinement Using Surface Plasmon Resonance
Surface plasmon resonance (SPR) biosensor is one of the optical sensor that exploits the specific properties of
electromagnetic waves. SPR biosensors have been generally utilized in the field of environmental sciences for a real-time
monitoring. It is a label-free technique that is utilized to recognize biological analytes and analyze the binding interactions
between a liquid sample with a biomolecular recognition element immobilized on the SPR sensor surface. we propose a
vertical tiny finite thickness metal-insulator-metal(MIM) surface plasmon resonance based optical sensor that is placed on a
silicon waveguide .The proposed waveguide structure act as a Fabry-perot resonator . The proposed biosensor is modeled
and simulated by using RSoft CAD tool and the channel property of the device is investigated by Finite difference time
domain (FDTD) solver in RSoft tool.
Key Words — finite difference time domain, RSoft CAD tool, Surface plasmons.