Tunable wavelength demultiplexer using modified graphene plasmonic split ring resonators for terahertz communication

Reverse Design of On-Chip Terahertz Demultiplexers

“…We summarized the relevant parameters of THz demultiplexers from literatures and our work in Table 1 for comparison. We obtained the transmittance values from the graphs in References [ 16 , 18 , 19 , 21 ]. The FWHM in Refs.…”

“…The FWHM in Refs. [ 16 , 19 , 21 ] and crosstalk in References [ 16 , 18 , 21 ] were not reported, so we left dashes in Table 1 . At present, the design of THz demultiplexers mainly relied on traditional optical methods.…”

“…A wavelength demultiplexer can effectively expand the wave transmission capacity and improve the integration of the optical system. At present, several methods have been proposed to fabricate demultiplexers, including using ring resonators [ 15 , 16 ], coupled cavity waveguides [ 17 , 18 ], directional coupling [ 19 ], a graphene plasmonic cross-shaped resonator [ 20 ], metamaterials and metasurfaces [ 21 , 22 , 23 ]. In this work, silicon-based two-port and three-port on-chip THz demultiplexers are architected by RDM.…”