Dielectric loaded graphene plasmon waveguide

• DOI: 10.1364/oe.23.005147
• Publication Date: 2015-02-19T17:51:25Z
• Authors: W. Xu; Z. H. Zhu; K. Liu; J. F. Zhang; X. D. Yuan; Q. S. Lu; S. Q. Qin
• Keywords: Waveguide; Cutoff frequency; Coupled mode theory

Dielectric loaded graphene plasmon waveguide (DLGPW) is proposed and investigated. An analytical model based on effective-index method presented verified by the finite element simulations. The mode effective index, propagation loss, cutoff wavelength of higher order modes single-mode operation region were derived at mid-infrared spectral region. By changing Fermi energy level, properties fundamental could be tuned flexibly. structure DLGPW simple easy for fabrication. It provided a new freedom to manipulate surface plasmons, which may led applications in actively tunable integrated optical devices.