Electrical Modulation of Fano Resonance in Plasmonic
Nanostructures Using Graphene
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Abstract
Pauli
blocking of interband transistions gives rise to
tunable
optical properties in single layer graphene (SLG). This effect is
exploited in a graphene-nanoantenna hybrid device where Fano resonant
plasmonic nanostructures are fabricated on top of a graphene sheet.
The use of Fano resonant elements enhances the interaction of incident
radiation with the graphene sheet and enables efficient electrical
modulation of the plasmonic resonance. We observe electrically controlled
damping in the Fano resonances occurring at approximately 2 μm,
and the results are verified by full-wave 3D finite-element simulations.
Our approach can be used for development of next generation of tunable
plasmonic and hybrid nanophotonic devices