Patent ID: 6204078
Filing Date: 2001-03-20
Classification: H01S

Abstract:
A method of fabricating a photonic semiconductor device, comprising:(a) preparing a semiconductor substrate having a flat surface;(b) forming a dielectric mask layer on said surface of said substrate, said mask layer having an elongated opening, and an elongated region of said surface of said substrate being exposed from said mask layer through said elongated opening;(c) forming a diffraction grating on a part of said elongated region of said surface of said substrate through said opening of said mask layer;(d) successively and selectively forming semiconductor layers on said elongated region of said surface of said substrate by a selective MOVPE process through said opening of said mask layer, thereby forming a multi-layer, elongated optical waveguide on said surface of said substrate, at least part of said waveguide being located on said part of said elongated region of said surface of said substrate and being contacted with said diffraction grating; and(e) after said successively and selectively forming semiconductor layers, removing said mask layer from said surface of said substrate.