A method for fabricating an optical semiconductor device includes the steps of forming at least two stripes of dielectric parallel to each other with a predetermined interval on a semiconductor substrate, growing a crystal selectively between the two stripes, and forming a multi-layer structure which...http://www.google.com.tw/patents/US5250462?utm_source=gb-gplus-share專利 US5250462 - Method for fabricating an optical semiconductor device