发明名称 |
Method and apparatus for manufacturing preform for fluoride glass fiber |
摘要 |
A method and apparatus is disclosed which ensures highly accurate control of the core-cladding diameter, enabling the fabrication of a preform for the single mode fiber. Moreover, glass refining steps for dehydration, the removal of compound ions, the reduction of the absorption loss by transition metals, etc. and preform manufacturing steps are combined into a series of steps, and the entire manufacturing process can be mechanized and automatically controlled; therefore, the yield rate of product is high and the industrial-scale productivity is also excellent.
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申请公布号 |
US4729777(A) |
申请公布日期 |
1988.03.08 |
申请号 |
US19860897297 |
申请日期 |
1986.08.15 |
申请人 |
KOKUSAI DENSHIN DENWA KABUSHIKI KAISHA |
发明人 |
MIMURA, YOSHINORI;SHINBORI, OSAMU;NAKAI, TETSUYA;TOKIWA, HIDEHARU |
分类号 |
C03C13/04;C03B5/00;C03B8/00;C03B37/012;C03B37/014;G02B6/00;(IPC1-7):C03B37/023 |
主分类号 |
C03C13/04 |
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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