Patent ID: 8744220

Claim:
An optical waveguide device manufacturing method comprising the steps of: forming a first under-cladding layer; placing a lead frame on an upper surface of the first under-cladding layer, wherein the lead frame comprises a first end portion on which a light emitting element is fixed and a second end portion being provided with terminals of the light emitting element, wherein the second end portion projects in a parallel direction to the upper surface of the first under-cladding layer from a rim of a side edge of the first under-cladding layer, the side edge being on a side of the first under-cladding layer that connects perpendicularly to the upper surface of the first under-cladding layer, wherein the second end portion being provided with the terminals is exposed in the air, and wherein the second end portion being provided with the terminals does not contact the first under-cladding layer; connecting the terminals to wirings; forming a second under-cladding layer to be in contact with the upper surface of the first under-cladding layer, wherein the second under-cladding layer is in contact with a top surface and periphery surfaces of the light emitting element, wherein the second under-cladding layer is in contact with a top surface and periphery surfaces of the first end portion of the lead frame, wherein the second under-cladding layer is not in contact with the second end portion of the lead frame, and wherein the light emitting element is buried in an under-cladding layer, the under-cladding layer including the first under-cladding layer and the second under-cladding layer stacked one on the other; and forming a core on an upper surface of the second under-cladding layer in a position such that light emitted from the light emitting element is incident on the core, the core being adapted to receive the emitted light through the second under-cladding layer.