METHOD FOR MANUFACTURING OPTICAL FIBER

PROBLEM TO BE SOLVED: To provide an optical fiber manufacturing method which optimizes the point in time of ending D2treatment. SOLUTION: The method for manufacturing the optical fiber including a step of subjecting the optical fiber after drawing to heavy hydrogen treatment has a point in time when...

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Bibliographic Details
Main Authors KUWABARA MASAHIDE, MORIHIRA HIDEYA, ISHIDA SADANORI, TAKAHASHI FUMIO
Format Patent
LanguageEnglish
Published 08.04.2004
Edition7
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To provide an optical fiber manufacturing method which optimizes the point in time of ending D2treatment. SOLUTION: The method for manufacturing the optical fiber including a step of subjecting the optical fiber after drawing to heavy hydrogen treatment has a point in time when the difference between the transmission loss at 1,385 nm wavelength and the transmission loss at 1,420 nm wavelength of the optical fiber before the heavy hydrogen treatment and the difference between the transmission loss at 1,385 nm wavelength and the transmission loss at 1,420 nm wavelength of the optical fiber after the heavy hydrogen treatment differ by ≥0.01 dB/km. COPYRIGHT: (C)2004,JPO
Bibliography:Application Number: JP20020268598