Patent ID: 7998766

Claim:
A manufacturing method of a ridge waveguide type semiconductor integrated element having an optical modulator and a laser diode integrated, comprising: forming onto a semiconductor substrate a multilayer structure having a layer which includes an optical modulator portion, a laser diode portion and a separating portion for electrically separating said optical modulator portion and said laser diode portion, a clad layer and a contact layer; forming onto a substrate a concave- or convex-shaped concave/convex structure including a ridge type optical waveguide which optically connects said optical modulator portion with said laser diode portion; embedding said concave/convex structure by an insulating resin, and forming an area in which said separating portion is located on said semiconductor substrate such that said area is swollen higher then said contact layer by said insulating resin; and forming electrodes into respective areas on said contact layer of said optical modulator and said laser diode portion where said electrodes are formed onto said substrate in which said concave/convex structure has been embedded by said insulating resin.