| 摘要 |
A holder of optical transmission lines encompasses an insulating base body defined by a mounting face to mount an optical device chip, an opposing face opposing to the mounting face and side faces which connect between the mounting face and the opposing face, one of side faces is assigned as an interconnection face, and provided with through-holes penetrating between the mounting face and the opposing face so as to hold optical transmission lines, the through-holes define openings on the mounting face; electric interconnections extending from respective vicinities of the opening on the mounting face on to the interconnection face; and heat conduction passages assigned alternately with the electric interconnections, extending from the mounting face on to the interconnection face, each of the heat conduction passages is longer than the electric interconnections on the interconnection face.
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