Optical printed circuit board and method for manufacturing the same

Abstract

An optical printed circuit board according to the embodiment includes an insulating layer; an optical wave guide buried in the insulating layer to transmit an optical signal; and an optical path changing part provided on at least one end of the optical wave guide to change a transmission path of the optical signal defined by the optical wave guide such that the transmission path has a predetermined curvature.

Description

technical field [0001] The invention relates to an optical printed circuit board and a manufacturing method thereof. Background technique [0002] Generally, a printed circuit board (PCB) is manufactured by using a copper clad laminate in which a conductive layer is laminated on an insulating member. This PCB can be manufactured by forming a circuit pattern on a copper clad laminate, which is called an electronic PCB. Because electronic PCBs use conductive metals such as copper as electronic interconnections for transmitting signals, electronic PCBs exhibit limitations in the mass storage age. [0003] In order to solve the above problems, recently, an optical PCB including an optical waveguide formed on an insulating member has been developed. To form optical waveguides as optical paths in optical PCBs, optical fibers comprising polymer or glass fibers are used. [0004] figure 1 A cross-sectional view of an optical PCB according to the prior art and a partially enlarge...

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Problems solved by technology

[0010] In addition, since the optical path switching part is manufactured by bending the optical waveguide at a right angle to switch the optical path at a right angle, light loss occurs due to the curved structure of the optical waveguide, and when bending work is performed, it is caused by high tension. Optical waveguide breakage

For this reason, it is inevitable to increase the thickness of the optical PCB

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