Analytical Study of TM-Polarized Surface Plasmon Polaritons in Nonlinear Multi-Layer Graphene-Based Waveguides

This paper presents an analytical study of TM-polarized surface plasmon polaritons (SPPs) in nonlinear multi-layer structures containing graphene sheets. In the general structure, each sheet has been sandwiched between two different magnetic materials. To show richness proposed waveguide, novel have introduced and investigated as special cases structure. It will be shown that propagation features these can tuned by changing chemical potential incident mode power. A large value effective index, i.e. 240 for 0.2 ev power 3 is obtained second structure at frequency 40 THz. The results confirm integration materials with sheets control enhance propagating self-focused field layer. gives more degrees freedom to designer propose new THz components such lasers switches region.