Patent ID: 8121443

Claim:
An optical transmission apparatus comprising: an optical element that has at least one of a light emitting part and a light receiving part on a surface opposed to a mounting surface of the optical element; an optical waveguide that is made of a polymer material, and has an optical path deflecting part in a through hole or an opening, wherein the optical path deflecting part deflects a one-way optical path of the optical waveguide with respect to the at least one of the light emitting part and the light receiving part of the optical element; and a substrate that has a first side wall, a second side wall, a mounting region on which the mounting surface of the optical element is mounted, and a plurality of waveguide holding parts formed integrally with the substrate, each waveguide holding part holding the optical waveguide so that the optical path deflecting part of the optical waveguide is arranged opposite to the at least one of the light emitting part and the light receiving part of the optical element; the optical waveguide being formed so that a width of the optical waveguide in a direction orthogonal to the optical path of the optical waveguide extends to the first side wall and the second side wall; the plurality of the waveguide holding parts being arranged along the optical path inside the optical waveguide so as to pass across the optical path deflecting part, a part of the optical waveguide which is not used for an optical transmission being extended from the optical path deflecting part, and a distal end portion of the part of the optical waveguide being held by one of the plurality of the waveguide holding parts.