| 摘要 |
The present invention relates to an electro-optical circuit board (EOCB) in which an optical waveguide for transmitting an optical signal, and a driving unit/receiving unit and an optical source/optical detector for converting an electrical signal into the optical signal, and vice versa are integrated. The EOCB has a structure from which a lens is excluded for the purpose of an economical and efficient optical coupling between the optical waveguide and the optical source/optical detector. The optical source/optical detector are buried within a trench of a metal optical bench. The optical waveguide is then attached on the surface of the optical source/optical detector by means of an epoxy. It is thus possible to minimize an alignment error between the optical source/optical detector and the optical waveguide. Further, the electro-optical circuit board (EOCB) has a single integrated package structure in which the optical waveguide, the optical source/optical detector, a metal optical bench having a heat spreader, and the driving unit/receiving unit are integrally packaged on the printed circuit board (PCB) in which electrical circuits are designed. The optical transmit/receive module packaged as such is inserted into the trench of the PCB and is then electrically connected using a via. This structure can improve economical efficiency and productivity by solving problems such as a problem due to use of a lens for optical coupling, a problem occurring in a course of aligning the optical waveguide, problems occurring in the processes of manufacturing the PCB and coupling the optical waveguide, or the like.
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