Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Osamu Kasuu0
Takashi Sasaki0
Shuichiro Kato0
Yuichi Ohga0
Toru Adachi0
Masaaki Hirano0
Masashi Onishi0
Date of Patent
February 3, 2009
0Patent Application Number
105569460
Date Filed
May 18, 2004
0Patent Primary Examiner
Patent abstract
A core rod is inserted into a cladding pipe, moisture in a space between the core rod and the cladding pipe is removed, and an optical fiber is drawn while the space is connected to a dry-gas atmosphere and/or being decompressed and while the core rod and the cladding pipe are being unified with each other. Alternatively, the core rod is inserted into the cladding pipe, and an optical fiber is drawn from one end while moisture on the surface of the core rod and the internal surface of the cladding pipe is being removed. Accordingly, a high quality optical fiber is manufactured with good productivity.
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