发明名称 |
METHOD OF PRODUCING GLASS PREFORM FOR OPTICAL FIBER |
摘要 |
A method for producing a glass preform for use in the fabrication of an optical fiber which comprises inserting a core rod made of quartz glass in a cladding tube made of quartz glass added with fluorine, heating them from the outside of the cladding tube to fuse them together to form a primary glass preform comprising a core rod and a first cladding layer around the core rod, depositing SiO2 soot particles around the primary glass preform and thermally treating the soot deposited glass preform in the presence of a fluorine-containing compound to form a final glass preform from which an optical fiber is fabricated. From the glass preform produced by this method, an optical fiber having low attenuation of light transmission in a wide range of wave-length is fabricated. |
申请公布号 |
DE3660540(D1) |
申请公布日期 |
1988.09.22 |
申请号 |
DE19863660540 |
申请日期 |
1986.04.18 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES LIMITED |
发明人 |
YOKOTA, HIROSHI C/O YOKOHAMA WORKS OF;KANAMORI, HIROO C/O YOKOHAMA WORKS OF;ISHIGURO, YOICHI C/O YOKOHAMA WORKS OF;MIZUTANI, FUTOSHI C/O YOKOHAMA WORKS OF;TANAKA, GOTARO C/O YOKOHAMA WORKS OF |
分类号 |
G02B6/00;C03B20/00;C03B37/012;C03B37/018;(IPC1-7):C03B37/012 |
主分类号 |
G02B6/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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