Patent ID: 7197221

Claim:
A light transmission and reception module, comprising: an optical waveguide film comprising: a waveguide core that extends in a film length direction and guides light as waveguide light; a conductor for power supply that extends in the film length direction and is provided in parallel with the waveguide core; and a cladding that surrounds the waveguide core and the conductor, a light transmitting section that has a light emitting element and a sub-mount for holding the light emitting element, and holds one end of the optical waveguide film onto the sub-mount so that light emitted from the light emitting element is coupled with an incident end surface of the optical waveguide; and a light detecting section that has a light detecting element and a sub-mount for holding the light detecting element, and holds the other end of the optical waveguide film onto the sub-mount so that light emitted from an emission end surface of the optical waveguide is detected by the light detecting element.