Fig. 4From: Graphene-Based Polarization-Independent Mid-Infrared Electro-Absorption Modulator Integrated in a Chalcogenide Glass Waveguidea Absorption coefficient of TE and TM modes as a function of μc at different Rb, (wavelength = 2.2 μm, Ra = 0.35 μm); b the absorption coefficient of TE and TM modes as a function of Rb (Ra = 0.35 μm, wavelength = 2.2 μm, μc = 0.1 eV)Back to article page