Patent ID: 7760981

Claim:
A method of manufacturing an optical waveguide device, comprising the steps of: preparing an optical waveguide including an under cladding layer and a protruding core pattern formed on the under cladding layer; preparing a mold formed with protruding portions for shaping of recessed portions for fitting engagement with predetermined portions of the protruding core pattern of said optical waveguide; preparing a board having an upper surface with a light-receiving element or a light-emitting element mounted thereon; placing said mold around said mounted light-receiving element or light-emitting element to accomplish positioning so that top surfaces of the shaping protruding portions of said mold lie over light-receiving portions of said light-receiving element or light-emitting portions of said light-emitting element; filling said mold with a sealing resin material and hardening the sealing resin material in said mold to form a sealing resin layer provided with the recessed portions for fitting engagement with the predetermined portions of the protruding core pattern of said optical waveguide; after removing the sealing resin layer from the mold, bringing the predetermined portions of the protruding core pattern of said optical waveguide into fitting engagement with the recessed portions of said sealing resin layer to optically couple the light-receiving portions of said light-receiving element or the light-emitting portions of said light-emitting element and the optical waveguide to each other; and forming an over cladding layer for covering the remaining portion of the protruding core pattern of said optical waveguide.