Optical semiconductor device with quantum wires, fabrication method thereof, and light source apparatus, and optical communication system using the same

摘要

An optical semiconductor device includes a semiconductor substrate, a first region formed on the substrate and a second region formed on the substrate. The first region has a first active layer, and the second region has a second active layer. At least one of the first active layer and the second active layer contains quantum wires which extend in a cavity direction of the device. The device is constructed such that the first active layer and the second active layer can be stimulated independently from each other.