Rare earth doped single polarization double clad optical fiber and a method for making such fiber
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United States of America Patent
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Apr 10, 2007
Grant Date -
Apr 27, 2006
app pub date -
Feb 14, 2005
filing date -
Oct 21, 2004
priority date (Note) -
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Abstract
An optical fiber, comprising: (i) a rare earth doped silica based elongated core with a first refractive index (n.sub.1) with an aspect ratio of 1:5 to 1; (ii) a silica based moat abutting and at least substantially surrounding the core, the moat having a refractive index n.sub.2, wherein n.sub.2
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