Large-scale integration of graphene optoelectronic devices in photonic integrated circuits

Abstract

Graphene is a 2D material recognized for its extremely high mobility and novel optoelectronic properties. In this thesis, we argue in favor of integrating graphene as an active optoelectronic material alongside optical waveguides on the back-end of CMOS ICs for photonic links in access network and computing applications. We describe a simple fabrication process which can accommodate both graphene modulators and photodetectors on almost any waveguide platform. We use this process to fabricate such devices on silicon waveguides and provide preliminary measurements. Finally, we discuss further research opportunities to improve graphene modulators and detectors to the point of being a competitive technology.