Laser array integrated on photonic device and methods of making the same

Abstract

A device includes a photonic integrated circuit (PIC) and a laser module. A surface of the PIC defines a recess in the PIC. The PIC comprises: first waveguides partially disposed in the recess, optical splitters, second waveguides at least partially disposed in the PIC, and electrical contacts. The laser module is mounted on the surface of the PIC and comprises: a substrate spanning the recess and supported by the PIC at two opposing edges of the recess, and lasers each having an output port, the lasers being supported by the substrate and at least partially disposed in the recess and optically coupled to a respective first waveguide of the PIC. The electrical contacts electronically connect the lasers to a voltage source. Portions of the PIC comprise an optically nonlinear material coupled to the second waveguides and configured to generate a frequency comb from optical signals received from the lasers.

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