Title:
METHOD AND APPARATUS FOR MANUFACTURING PREFORM FOR OPTICAL FIBER
Document Type and Number:
Japanese Patent JP3968451
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To lead a gas flow of a gas supplying unit upward of a chamber from below of a starting member such as a core material so that the gas flow is not directly blown onto a soot deposited body.
SOLUTION: When an optical fiber preform is formed by forming an outer layer part 3 such as a clad part by subjecting silicon tetrachloride to flame hydrolysis to form glass fine particles by using an oxyhydrogen flame burner 6 installed below the starting member 4 and depositing the formed glass fine particles on the starting member 4 in a chamber 2, the gas supplying units 7 are each installed at the both ends of the oxyhydrogen flame burner 6 so that the gas flow is blown obliquely upward to the wall surface 2b of the chamber 2 from below of the starting member 4 and led to the upper part of the chamber 2 in order to blow the gas flow upward of the chamber 2 from below of the starting member 4 by each gas supplying unit and to deposit the glass fine particles.
Inventors:
Kazuhiro Tomita
Helmet Tama Yoshinao
Ichiro Okamoto
Helmet Tama Yoshinao
Ichiro Okamoto
Application Number:
JP2002198870A
Publication Date:
August 29, 2007
Filing Date:
July 08, 2002
Export Citation:
Assignee:
Showa Densen Cable System Co., Ltd.
International Classes:
C03B37/018; G02B6/00; C03B8/04; C03B37/014; (IPC1-7): C03B37/018; C03B8/04; G02B6/00
Domestic Patent References:
| JP2001019437A | ||||
| JP7101744A | ||||
| JP2003034540A |
Attorney, Agent or Firm:
Kazuo Moriya