发明名称 |
METHOD FOR PRODUCING HIGHLY PURE GLASS PREFORM FOR OPTICAL FIBER |
摘要 |
<p>A method for producing a glass preform for an optical fiber by an outside vapor-phase depostion method, which comprises forming fine glass particles by jetting gaseous glass raw material and fuel gas from a first burner to deposit the particles on a seed rod to form a soot rod at such a temperature that a specific bulk density of the soot rod being formed is low and subsequently heating the soot rod by a second burner so as to increase the bulk density of the soot and then sintering the soot rod to obtain a transparent glass preform for an optical fiber, by which method, a highly pure glass preform is produced in a good deposition yield without cracking.</p> |
申请公布号 |
CA1238821(A) |
申请公布日期 |
1988.07.05 |
申请号 |
CA19850475946 |
申请日期 |
1985.03.07 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
TANAKA, GOTARO;KANAMORI, HIROO;MIZUTANI, FUTOSHI |
分类号 |
C03B37/018;C03B8/00;C03B19/14;C03B37/014;C03B37/12;G02B6/00;(IPC1-7):C03B37/018 |
主分类号 |
C03B37/018 |
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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