Polarization-maintaining optical fiber
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United States of America Patent
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Feb 17, 2015
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app pub date -
Apr 3, 2013
filing date -
Oct 5, 2010
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Abstract
A polarization-maintaining optical fiber of the present invention includes a core, a pair of stress-applying parts provided on both sides of the core, and a cladding surrounding the core and the stress-applying parts, and is used in a wavelength range of 400 to 680 nm. The diameter of the cladding is 125 μm, the diameter of the stress-applying part is 33 to 37 μm, a distance between the pair of stress-applying parts is 8.6 to 15.4 μm, a relative refractive index difference between the core and the cladding is 0.35 to 0.45%, and a cut-off wavelength is less than or equal to 400 nm.
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