发明名称 |
Method of fabricating optical fiber preforms |
摘要 |
An improved method of preparing optical fiber preforms and optical fibers by so called rod-in-tube method, wherein before collapsing a tube to heat-adhere to a rod, a specific glass surface treating agent and oxygen gas are flowed through the clearance between the rod and the tube maintained at a high temperature, whereby an optical fiber preform free from imperfections at the interface between the rod and the tube can be produced so as to give optical fibers of low-loss. As the above glass surface treating agent, those materials are employed which satisfy the following criteria: (i) the hydrogen content thereof being not more than about 1% by weight, and (ii) the substances, produced therefrom in the presence of oxygen gas at a high temperature, having a boiling point or sublimation point of not more than the temperature required for collapsing the tube.
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申请公布号 |
US4264347(A) |
申请公布日期 |
1981.04.28 |
申请号 |
US19790094499 |
申请日期 |
1979.11.15 |
申请人 |
DAINICHI-NIPPON CABLES, LTD. |
发明人 |
SHINTANI, TAKESHI;UTSUMI, ATSUSHI;SUKAWA, TADAAKI;KOBAYASHI, RYUJI |
分类号 |
C03B37/075;C03B8/00;C03B20/00;C03B37/012;C03B37/027;C03C15/00;C03C23/00;G02B6/00;(IPC1-7):C03C25/02 |
主分类号 |
C03B37/075 |
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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