发明名称 |
Apparatus and method for production of a porous optical fiber preform |
摘要 |
An apparatus for the production of a porous optical fiber preform preventing cracks in the preform and stabilizing quality over the longitudinal direction. The apparatus includes a reaction portion, a feed port for introducing a stream of gas, and a main exhaust port. A rotating mechanism is provided for mounting, rotating, and pulling up a seed rod for forming the porous optical fiber preform. A first burner emits a flame carrying fine particles of glass forming the core portion, and a second burner emits a flame carrying fine particles of glass forming the cladding portion. A portion adjusts the flow of the stream from the feed port to the main exhaust port so that the flames carrying the glass particles are not disturbed by the stream and so that the stream does not directly contact a fine glass particle deposit formed at a bottom end of the seed rod.
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申请公布号 |
US6619074(B1) |
申请公布日期 |
2003.09.16 |
申请号 |
US20000649576 |
申请日期 |
2000.08.29 |
申请人 |
THE FURUKAWA ELECTRIC CO., LTD. |
发明人 |
WADA HIROYUKI;MIKAMI TOSHIHIRO;KANAO AKIHIRO;KOHMURA YUKIO |
分类号 |
C03B37/018;B01J4/00;C03B37/014;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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