ABSTRACT
This chapter explains design and full wave analysis of terahertz devices employed for the multiplexing/demultiplexing and sensing applications using graphene plasmonic waveguides. The properties of graphene have been discussed firstly at the materialistic level and then its electronic and modal properties in the optical and THz frequencies have been described. Further, the modeling of graphene plasmonic nanostrip waveguide (GPNSW) and graphene plasmonic suspended nanostrip waveguide (GPSNW) to determine phase constant, attenuation constant and characteristic impedance have been emphasized in detail. We have also included the modeling of wavelength-division-demultiplexer, diplexer and sensor structures using these waveguides at THz frequencies. Subsequently, their full-wave analysis and parametric results have been presented, proving their dominance on microwave counterparts.
