| 摘要 |
A photoelectronic device providing design freedom and providing for the production of a variety of designs in small quantities. The device includes a light emitting element for emitting a light to be used as a clock signal, a semiconductor chip with light receiving portions, and an optical waveguide sheet having an outer circumference of a core covered with a clad. The optical waveguide sheet is irradiated at a light incident portion of the core with a light from the light emitting element and includes one or more T-shaped branches. At each T-shaped branch, a vertical opening portion has a vertical inner wall serving as a mirrored structure for dividing and reflecting the light. The optical waveguide sheet includes a sloping opening portion with a sloping inner wall serving as a mirrored surface for reflecting the incident light in a direction out of a surface of the optical waveguide sheet.
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