Patent ID: 7747111
Filing Date: 2010-06-29
Classification: G02B,H01L,H05K

Abstract:
1. A method of producing an optical waveguide mounted substrate comprising an electrical circuit substrate and an optical waveguide formed on the electrical circuit substrate, the electrical circuit substrate having an insulating layer positioned at its surface and a conductor layer below the insulating layer, the method comprising steps of: forming at least one opening in the insulating layer to expose the conductor layer; forming a lower cladding layer on the insulating layer, the lower cladding layer having an opening at a position corresponding to the opening of the insulating layer; forming a resist layer on the lower cladding layer, and forming an opening at a position of the resist layer corresponding to the opening of the insulating layer; performing electrolytic plating with using the conductor layer which is exposed through the openings, as an electrode, to fill the openings with a metal, the openings passing through the insulating layer, the lower cladding layer, and the resist layer; removing the resist layer to form a projection configured by the filled metal; processing the projection to have an inclined face; forming a reflecting layer on the inclined face of the projection; stacking a core layer on the lower cladding layer and the reflecting layer; and stacking an upper cladding layer on the core layer.