Patent ID: 6937632
Filing Date: 2005-08-30
Classification: H01S

Abstract:
1. A semiconductor device, comprising a semiconductor substrate and a plurality of semiconductor layers grown over said substrate that form a plurality of integrated optical components, said components including a buried heterojunction laser component and a waveguide component having an optically guiding structure; the laser component and the waveguide component including at least one active layer, the waveguide component being arranged to be optically coupled via said active layer with laser radiation generated by the laser component; the laser component including a laser current conduction region and adjacent said laser current conduction region a laser current confinement region; the waveguide component including a waveguide current conduction region and adjacent said waveguide current conduction region a waveguide current confinement region; the laser current confinement region comprising a first current blocking structure formed from grown semiconductor layers; and the waveguide current confinement region comprising a second current blocking structure formed from grown semiconductor layers and including an extension of the first current blocking structure, said extension being interposed between the second current blocking structure and the waveguide current conduction region.