Embedded optical coupling in circuit boards

摘要

Optical fibers are embedded in a fiber layer contained between top and bottom surfaces of a circuit board. The optical fibers have fiber ends facing into holes or cavities defined in the insulating board. Optoelectronic emitter and detector elements are mounted in the holes in optical coupling with the fiber ends. The board also has layers of conductive traces for interconnecting electronic components and devices mounted on the board and for electrically connecting the optoelectronic emitter and detector devices to corresponding transmitter and receiver modules.