Numerical analysis of a Kretschmann surface plasmon resonance sensor with silver/TiO_(2)/BaTiO_(3)/silver/graphene for refractive index sensing

The sensitivity of a Kretschmann surface plasmon resonance(SPR)sensor was analyzed.The Kretschmann setup had multiple layers,a BK7 prism,silver,barium titanate(BaTiO_(3)),titanium dioxide(TiO_(2)),and graphene.The BaTiO_(3)and TiO_(2)coatings were sandwiched between two silver layers.The sensitivity of 260°/RIU has been achieved.The graphene layers are added to the configuration to improve sensitivity and as a bio-compatibility agent.This configuration can be used for biochemical sensors.