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Table 1 SPR parameters for WcBiM configurations when the refractive index is changed from 1.335 to 1.35

From: Enhancing performance of a miniaturized surface plasmon resonance sensor in the reflectance detection mode using a waveguide-coupled bimetallic chip

Configuration Minimum reflectance Resonance angle Steepest slope Reflectance at n= 1.335 Reflectance at n= 1.35 ΔR
(Rn= 1.35Rn= 1.335)
(%) (deg) Rθ) (%) (%) (%)
Au(31 nm)/WG/Ag(25 nm) 0.005 64.63 −155.8 29.86 92.82 62.96
Au(25 nm)/WG/Ag(25 nm) 2.697 63.97 −156.0 33.51 93.78 60.27
Au(31 nm)/WG/Ag(20 nm) 4.608 64.77 −115.8 33.69 91.83 58.14
Au(31 nm)/WG/Ag(35 nm) 17.528 64.51 −181.7 39.97 93.03 53.06
Au(35 nm)/WG/Ag(25 nm) 1.507 65.00 −154.3 29.50 92.46 62.96
  1. WG waveguide.