Efficient terahertz electro-absorption modulation employing graphene plasmonic structures
arXiv:1211.4176 · doi:10.1063/1.4773374
Abstract
We propose and discuss terahertz electro-absorption modulators based on graphene plasmonic structures. The active device consists of a self-gated pair of graphene layers, which are patterned to structures supporting THz plasmonic resonances. These structures allow for efficient control of the effective THz optical conductivity, thus absorption, even at frequencies much higher than the Drude roll-off in graphene where most previously proposed graphene-based devices become inefficient. Our analysis shows that reflectance-based device configurations, engineered so that the electric field is enhanced in the active graphene pair, could achieve very high modulation-depth, even ~100%, at any frequency up to tens of THz.
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Cited by in corpus (6)
- Optical modulators with two-dimensional layered materials
- Graphene based functional devices: A short review
- A tunable plasmonic refractive index sensor with nanoring-strip graphene arrays
- Modeling the Excitation of Graphene Plasmons in Periodic Grids of Graphene Ribbons: An Analytical Approach
- Coupling of Plasmon Modes in Graphene Microstructures
- Double well heterostructures for electric modulation of light