Performance Analysis of a Kretschmann-Based Ag-ITO-Au Surface Plasmon Resonance Sensor through Numerical Simulations

Table 2

The influence of the graphene and Cr layer on sensor sensitivity and FOM value.

Sensor configuration	Sensitivity	FWHM	FOM
20 nm Ag/30 nm ITO/10 nm Au	197.6° RIU^−1	4.55	43.4 RIU^−1
20 nm Ag/G/30 nm ITO/10 nm Au	92° RIU^−1	4.19	22.0 RIU^−1
0.5 nm Cr/20 nm Ag/30 nm ITO/10 nm Au	113.3° RIU^−1	4.73	24.0 RIU^−1
0.5 nm Cr/20 nm Ag/G/30 nm ITO/10 nm Au	98.7° RIU^−1	4.58	21.6 RIU^−1