A wavelength-locked, integrated optical signal source structure using a semiconductor laser device is disclosed. The optical source structure has a semiconductor laser formed on a semiconductor substrate, and an etched portion coupled with an output end of the semiconductor laser. The etched portion...http://www.google.de/patents/US6798799?utm_source=gb-gplus-sharePatent US6798799 - Wavelength locked integrated optical source structure using multiple microcavity
