Patent ID: 8666204

Claim:
An optical transmission module for converting and transmitting a first electrical signal, the optical transmission module comprising: a semiconductor substrate having a first surface and a second surface opposite to the first surface; a first film layer formed on the first surface of the semiconductor substrate; an electronic component layer formed on the second surface of the semiconductor substrate for converting the first electrical signal into an optical signal and emitting the optical signal; and a waveguide structure formed on the first film layer, and comprising a first reflective surface, a waveguide body and a second reflective surface, wherein after the optical signal is transmitted through the semiconductor substrate and the first film layer and enters the waveguide structure, the optical signal is sequentially reflected by the first reflective surface, transmitted within the waveguide body and reflected by the second reflective surface, wherein after the optical signal reflected by the second reflective surface is transmitted through the first film layer and the semiconductor substrate and received by the electronic component layer, the optical signal is converted into a second electrical signal by the electronic component layer.