Reconfigurable and optically transparent graphene-based devices

The quest for reconfigurable and optically transparent devices in photonic and microwave applications is increased in the last years. This growing research interest is driven by the opportunity to combine photonic and microwave technologies, thus creating unprecedented tools. In this framework, graphene can be a game-changer due to the ability to modify and tune its electromagnetic behavior in both photonic and microwave ranges. In this paper, we review the latest achievements in graphene-based reconfigurable devices and report the design and characterization of reconfigurable microwave devices such as tunable absorbers and ring resonators that exploit both highly conductive and lossy-dielectric CVD graphene layers.