OPTICAL FIBER FOR FIBER BRAGG GRATING
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United States of America Patent
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Issued Date -
Apr 21, 2016
app pub date -
Oct 7, 2015
filing date -
Oct 16, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An optical fiber having a composition that is most suitable from the viewpoint of filter formation time and filter properties of slanted fiber grating (SFG) is provided. An optical fiber made of silica-based glass comprises a core region, which does not contain GeO2 and includes the optical axis, and a cladding region formed around the core region. The cladding region has a refractive index smaller than that of the core region and contains GeO2 of 6.8 wt % or more. SFG made with the optical fiber enables base loss of 2 dB or less, peak wavelength shift of 1.2 nm or less, and change of 0.2 nm or less in width at half maximum.
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