Design of III-V nanowires based micosources vertically coupled to a Si waveguide for optical interconnects

We design a III-V nanowires based photonic cavity on top of SOI waveguide for light generation in the near infrared (~1.3μm) in a silicon photonic circuit. 3D electromagnetic simulations (FDTD) are performed to design a periodic array of III-V photonic NWs vertically grown on Si. High quality factor resonances and efficient coupling between these micro-resonators and the SOI waveguide is targeted. The geometrical parameters of this architecture (number of NWs, diameter and spacing) are optimised by simulations. This original architecture opens the way to the monolithic integration of low power and small footprint microsources for silicon photonics.