Optical fiber and method for fabricating the same
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United States of America Patent
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Dec 10, 2013
Grant Date -
Jul 21, 2011
app pub date -
Aug 21, 2009
filing date -
Sep 26, 2008
priority date (Note) -
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Abstract
An optical fiber (10) includes: a core (11); a first cladding (12) surrounding the core (11) and having a lower refractive index than the core (11); and a second cladding (13) surrounding the first cladding (12) and having a lower refractive index than the first cladding (12). The first cladding (12) is doped with light attenuating dopant so that a concentration of the light attenuating dopant in the first cladding (12) increases from an inner surface of the first cladding (12) toward an outer surface of the first cladding (12).
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