Patent ID: 8389395

Claim:
A method for manufacturing a semiconductor optical device, the method comprising the steps of: forming a BCB resin region on a semiconductor optical device; producing an inductively coupled plasma from a gas containing oxygen atoms and nitrogen atoms and processing a surface of the BCB resin region with the produced plasma in an inductively coupled plasma apparatus that is provided with a susceptor, a high-frequency power supply for supplying ICP power and a high-frequency power supply for supplying bias power to the susceptor to form a silicon oxide film on the surface of the BCB resin region the step of processing of the surface of the BCB resin region including: controlling the supply of the ICP power to control the thickness of the silicon oxide film formed by said processing, and controlling the supply of the bias power independently of the control of the supply of ICP power to cause formation of projections and recesses roughening the BCB resin region surface by the nitrogen atoms in the produced plasma; and forming an electrode pad composed of a metal on the surface of the BCB resin region in direct contact with the silicon oxide film.