| 摘要 |
An optical interconnection device is provided. The optical interconnection device includes an optical component and a substrate on which the optical component is surface-mounted. The substrate includes: an optical waveguide which is formed in the substrate and which includes a core layer, and a cladding layer covering the core layer; and an optical path changing portion provided adjacent to one end portion of the optical waveguide to change an optical path of light transmitted through the optical waveguide or an optical path of light communicated by the optical component. A width of the core layer is broadened toward the optical path changing portion, when viewed from a plane which is parallel with a surface of the substrate.
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