End pumped PWG with tapered core thickness
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United States of America Patent
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Aug 8, 2017
Grant Date -
Feb 18, 2016
app pub date -
Apr 9, 2015
filing date -
Aug 14, 2014
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Abstract
A planar wave guide (PWG) having a first end for coupling to a light pump and a second end opposite to the first end and including a first cladding layer; a second cladding layer; and a uniformly doped core layer between the first cladding layer and the second cladding layer, wherein the core layer is tapered having a smaller thickness at the first end and a larger thickness at the second end, and wherein a ratio of the core thickness to thickness of the cladding layers is smaller at the first end and larger at the second end.
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