Patent ID: 8559478

Claim:
A photonic device comprising: a silicon-on-insulator substrate comprising a silicon layer that includes a first waveguide; and a compound semiconductor structure comprising: a first layer comprising a p-type compound semiconductor; a second layer comprising an n-type compound semiconductor; and a multiple-quantum-well (MQW) layer that is between the first layer and the second layer, the MQW layer being characterized by an as-grown bandgap, the MQW layer including a first region having a first bandgap that is shifted by a first shift from the as-grown bandgap, the first shift being based on an ion-implanted layer proximate to the second layer and distal to the first layer; wherein the compound semiconductor structure and the first waveguide are bonded such that the MQW layer and the first waveguide are optically coupled and the second layer is proximate to the first waveguide.