Figure 1
From: Sensitive Real-Time Monitoring of Refractive Indexes Using a Novel Graphene-Based Optical Sensor
The polarization-dependent features in graphene sandwiched structure.
(a) A schematic illustration of graphene sandwiched between two dielectric layers. (b) A plot of the intensities of the evanescent waves for the x and z components at p-polarization and the y component at s-polarization with different incident angles. (c) A plot of the intensities of the evanescent waves for the x and z components at p-polarization and the y component at s-polarization with different refractive indexes n2. The incident angle is 75°. (d) The experimental results of reflectance for s- and p-polarized light with different Δn = n1−n2 using a derivative total reflection method. (e) The theoretical results of reflectance for s- and p-polarized light with different Δn based on Maxwell's boundary conditions. (f) The experimental (circles) and theoretical (line) results of ΔR with different refractive indexes n2.
