OPTICAL FIBER AND METHOD OF PRODUCING THE SAME - SUMITOMO ELECTRIC INDUSTRIES

Title:

OPTICAL FIBER AND METHOD OF PRODUCING THE SAME

Document Type and Number:

WIPO Patent Application WO/2004/101456

Kind Code:

A1

Abstract:

A core rod is inserted in a clad pipe, and the moisture in a clearance between the core rod and the clad pipe is removed. The clearance is connected to a drying gas atmosphere and/or evacuated so as to heat and integrate them, during which time an optical fiber is drawn. Alternatively, the core rod is inserted in the clad pipe and the moisture on the core rod surface and on the inner surface of the clad pipe is removed, during which time an optical fiber is drawn from one end. Thereby, an optical fiber of high quality is efficiently produced.

Inventors:

OHGA YUICHI (JP)
ONISHI MASASHI (JP)
KASUU OSAMU (JP)
KATO SHUICHIRO (JP)
ADACHI TORU (JP)
SASAKI TAKASHI (JP)
HIRANO MASAAKI (JP)

Application Number:

PCT/JP2004/007039

Publication Date:

November 25, 2004

Filing Date:

May 18, 2004

Export Citation:

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Assignee:

SUMITOMO ELECTRIC INDUSTRIES (JP)
OHGA YUICHI (JP)
ONISHI MASASHI (JP)
KASUU OSAMU (JP)
KATO SHUICHIRO (JP)
ADACHI TORU (JP)
SASAKI TAKASHI (JP)
HIRANO MASAAKI (JP)

International Classes:

C03B37/012; C03B37/027; (IPC1-7): C03B37/012; C03B37/023; C03B37/027; G02B6/00

Foreign References:

JP2003112936A	2003-04-18
JP2003048737A	2003-02-21
JPS61117126A	1986-06-04
JP2001220164A	2001-08-14
JPS4111071B1

Other References: