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US 2017/0285259 A1Published application
Optical fiber preform, optical fiber, and method of manufacturing optical fiber
AssigneeFujikura Ltd.
InventorKatsubumi Nagasu
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Abstract
An optical fiber preform includes: a core formed of silica glass which does not contain Ge, wherein the core has at least one of characteristics in spectrometry of (1) an absorption peak is present at a wavelength of 240 nm to 255 nm, and (2) a wavelength at which an ultraviolet transmittance is 50% or lower is longer than 170 nm.
Claims6
An optical fiber preform comprising:
- a core formed of silica glass which does not contain Ge,
- wherein the core has at least one of characteristics in spectrometry of
- (1) an absorption peak is present at a wavelength of 240 nm to 255 nm, and
- (2) a wavelength at which an ultraviolet transmittance is 50% or lower is longer than 170 nm.
1 more element
Dependencies are inferred from the claim text.