Optical transmission module
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United States of America Patent
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Jan 30, 2018
Grant Date -
Sep 29, 2016
app pub date -
Mar 17, 2016
filing date -
Mar 25, 2015
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Abstract
An optical transmission module includes: a package; a plurality of light-emitting elements each emitting light in the interior of the package; a beam splitter splitting the light into transmitted light and split light; a plurality of light-receiving elements each including a light-receiving surface on which the split light is incident in the interior of the package, for monitoring light outputs of the plurality of light-emitting elements; and a first light-shielding film provided between the plurality of light-emitting elements and the beam splitter and including a plurality of first holes for the light to propagate to the beam splitter, wherein the plurality of light-receiving elements are disposed with the light-receiving surfaces facing the beam splitter.
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