| 发明名称 |
FIBRA OTTICA A BASSA ATTENUAZIONE E AD ALTA RESISTENZA CON ANIMA FILAMENTARE DI SILICE |
| 摘要 |
<p>Low attenuation, high strength optical fiber is made by drawing a silica filament core at a temperature from 2040 DEG C. to 2140 DEG C. and melt coating onto it cladding polymer having an index of refraction lower than that of the silica core by extrusion at a draw-down ratio from 1.2 to 2.0.</p> |
| 申请公布号 |
IT1092785(B) |
申请公布日期 |
1985.07.12 |
| 申请号 |
IT19780020504 |
申请日期 |
1978.02.21 |
| 申请人 |
E.I.DU PONT DE NEMOURS & CO |
发明人 |
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| 分类号 |
D01F8/04;B29C47/00;C03B37/027;C03C25/10;C03C25/18;D01F8/18;G02B6/00;G02B6/02;G02B6/44;(IPC1-7):G02B/ |
主分类号 |
D01F8/04 |
| 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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