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arxiv: 1511.02791 · v2 · pith:4F3LXEUVnew · submitted 2015-11-09 · ❄️ cond-mat.mes-hall

30 GHz optoelectronic mixing in CVD graphene

A. Montanaro , S. Mzali , J.-P. Mazellier , O. Bezencenet , C. Larat , S. Molin , P. Legagneux , D. Dolfi
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B. Dlubak P. Seneor M.-B. Martin S. Hofmann J. Robertson A. Centano A. Zurutuza
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classification ❄️ cond-mat.mes-hall
keywords grapheneoptoelectronicmixingsignalal2o3atomicchannelchemical
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We report an optoelectronic mixer based on chemical vapour-deposited graphene. Our device consists in a coplanar waveguide that integrates a graphene channel, passivated with an atomic layer-deposited Al2O3 film. With this new structure, 30 GHz optoelectronic mixing in commercially-available graphene is demonstrated for the first time. In particular, using a 30 GHz intensity-modulated optical signal and a 29.9 GHz electrical signal, we show frequency downconversion to 100 MHz. These results open promising perspectives in the domain of optoelectronics for radar and radio-communication systems.

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