UNIT OPTICAL FIBER

The present invention provides an optical fiber superior in yellowing resistance. An optical fiber according to the present invention has a coating made from a UV curable resin formed on the outer surface of a bare optical glass fiber, and is characterized in that the coated material includes an unr...

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Bibliographic Details
Main Authors SATO, TETSUO, UI, KEISUKE, SENO, ATSUYOSHI
Format Patent
LanguageEnglish
French
German
Published 23.10.2013
Subjects
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS
CHEMISTRY
GLASS
JOINING GLASS TO GLASS OR OTHER MATERIALS
METALLURGY
MINERAL OR SLAG WOOL
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS
SURFACE TREATMENT OF GLASS
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Summary:The present invention provides an optical fiber superior in yellowing resistance. An optical fiber according to the present invention has a coating made from a UV curable resin formed on the outer surface of a bare optical glass fiber, and is characterized in that the coated material includes an unreacted photoinitiator in an amount of 2.4 × 10 -3 mole equivalent or less in 1 g of the material. The optical fiber is characterized in that the UV curable resin includes urethane acrylate, a polyisocyanate component in the urethane acrylate is an aromatic polyisocyanate, and tolylene diisocyanate is used as the aromatic polyisocyanate.
Bibliography:Application Number: EP20070740456