Tunable band gap near the Dirac point in nonlinear negative-zero-positive index metamaterial waveguide

Journal Article · Fri Apr 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.045804· OSTI ID:21544739

Ming, Shen; Linxu, Ruan; Jielong, Shi; Qi, Wang ^[1]; Xinglin, Wang ^[2]

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1. Department of Physics, Shanghai University, Shanghai 200444 (China)
2. Department of Applied Mathematics and Physics, Anhui Normal University, Wuhu 241000 (China)

We make theoretical investigations of the nonlinear guided modes near the Dirac point (DP) in nonlinear negative-zero-positive index metamaterial (NZPIM) waveguide. When the nonlinearity is self-focusing, an asymmetric forbidden band exists near the DP that can be modulated by the strength of the nonlinearity. However, the self-defocusing nonlinearity can completely eliminate the asymmetric band gap. We also study the nonlinear surface waves in such nonlinear NZPIM waveguide. These results may predict analogous phenomena in nonlinear graphene.

• OSTI ID: 21544739
• Journal Information: Physical Review. A, Vol. 83, Issue 4; Other Information: DOI: 10.1103/PhysRevA.83.045804; (c) 2011 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ASYMMETRY
DIRAC EQUATION
NONLINEAR PROBLEMS
WAVE PROPAGATION
WAVEGUIDES
DIFFERENTIAL EQUATIONS
EQUATIONS
FIELD EQUATIONS
PARTIAL DIFFERENTIAL EQUATIONS
WAVE EQUATIONS