spr sensing enhancement with dynamic radiative damping stimulated by graphene conductivity under temperature variation in nir

The dynamic nature of radiation damping is exploited in a fluoride fiber–based plasmonic sensor in terms of variable temperature (t) and ag layer thickness (dm) at certain near-infrared wavelengths. the optimum point of radiation damping, which is stimulated by the presence of a graphene monolayer and its dynamic dispersive and thermo-optic properties as per kubo formulation, causes extremely huge enhancement in sensor’s performance (analyzed in terms of its figure of merit, i.e., fom). the simulation indicates that at λ = 1550 nm, the optimum radiation damping is achieved at dm = 35 nm and t = 322.7 k leading to a peak fom value of 27,086 riu−1. at λ = 1310 nm, the peak fom is 16,736.65 riu−1 for dm = 35.4 nm and t = 315.6 k. the above peak fom values are significantly greater than those presently available with plasmonic sensors.