Patent ID: 6194240
Filing Date: 2001-02-27
Classification: H01S

Abstract:
Method for selective fabrication of a laser structure including a wavelength selective electro-optic grating which comprises the steps of:(a) depositing a first n-type contact layer upon the surface of a semi-insulating or doped III-V semiconductor substrate;(b) depositing a waveguide upon the n-type contact layer;(c) depositing a second n-type contact layer upon the waveguide;(d) depositing an active layer upon the said second n-type contact layer;(e) selectively etching the active layer and the second n-type contact layer down to the waveguide layer in a region of the structure designed for formation of a grating;(f) growing a cladding/spacer material upon said region designed for formation of a grating;(g) depositing a conductive material on the resultant structure; and(h) patterning said conductive material to form electrodes in the shape of a grating.