Integration of 1.3- Quantum-Dot Lasers With Waveguides for Single Mode Optical Interconnects

摘要

A single mode photonic integrated circuit, consisting of a monolithically integrated quantum-dot laser and a suitably designed ${rm Si}_{3}{rm N}_{4}$ waveguide, is demonstrated. The 1.3-$mu{rm m}$ quantum-dot laser incorporates a superlattice barrier, p-doping, and tunnel injection in the active region, demonstrating operation up to 85$^{circ}{rm C}$ with excellent temperature stability (high ${rm T}_{0}$). The two devices are optimally groove coupled to minimize the losses. Integration of the tapered waveguide with a quantum-dot cross laser is also demonstrated.