Multimode laser diode and side-coupled fiber package
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United States of America Patent
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Dec 23, 2003
Grant Date -
N/A
app pub date -
Sep 25, 2002
filing date -
Sep 25, 2002
priority date (Note) -
Expired
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Abstract
A multimode diode package and pump-coupler package are provided with a beam rotator that facilitates efficient packaging of a multimode diode laser with a side-coupled optical fiber. The beam rotator comprises a pair of reflective surfaces that perform/a pair of 'off-plane bounces' to rotate the beam's fast axis. In an XYZ coordinate system, if the diode lies in the XZ-plane and emits the beam along the Z-axis with its fast-axis along the Y-axis, the first reflective surface folds the beam along the Y-axis and its fast-axis along the Z-axis. The second reflective surface folds the beam along the X-axis and leaves the fast-axis along the Z-axis. The fiber is mounted in the XZ-plane along the Z-axis parallel to the fast-axis.
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