| 摘要 |
A photo-functional device has a semiconductor substrate, a light emitting section laminated on one surface of the semiconductor substrate and formed into a semiconductor laminate, a light receiving section laminated on the one surface of the semiconductor substrate, formed into a semiconductor laminate and electrically connected in series to the light emitting section, and a coupling rate conversion section disposed between the light emitting section and the light receiving section for converting a coupling rate of light coupled from the light emitting section to the light receiving section.
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