Fig. 2From: A Tunable Dual-Band and Polarization-Insensitive Coherent Perfect Absorber Based on Double-Layers Graphene Hybrid WaveguideThe reflection (R), transmission (T), and absorption (A) spectra of the proposed graphene-based absorber with Fermi energies Ef1 = 0.66 eV and Ef2 = 0.31 eV under the illumination of only one incident beam I1 in the z directionBack to article page