Abstract: An article of manufacture is applied to an optical waveguide holding member including a contact surface on the bottom face, which is to be in contact with a printed circuit board; a connection surface on the back face; an optical waveguide connecting the contact surface and the connection surface; and a lens unit disposed at an end of the optical waveguide. A light curing adhesive is applied to a part of the contact surface, adjacent to the lens unit so that the part is bonded to the printed circuit board. A two-component mixed adhesive is applied to, along peripheries of the contact surface in contact with the printed circuit board, outer edges of lateral-side peripheries adjacent to the lens unit and an outer edge of a back-side periphery close to the back face so that the lateral-side peripheries and the back-side periphery are bonded to the printed circuit board.