发明名称 |
Method for plasma overcladding a fluorine-doped optical fiber preform tube |
摘要 |
Method for plasma overcladding a fluorine-doped optical fiber preform tube. <??>The field is that of methods for providing fiber-optic final preforms obtained by external plasma overcladding build-up around a primary preform. The method involves providing a final preform starting from a primary preform by external plasma deposition of silica grain over a primary preform, the outer peripheral layer of the primary preform consisting of a fluorine-doped silica tube. The build-up process involves forming a first overcladding using fluorine-doped synthetic silica grain followed by a second overcladding step using natural silica grain. The optical fibers obtained and their associated optical fiber preforms are also disclosed. <IMAGE>
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申请公布号 |
EP1544175(A1) |
申请公布日期 |
2005.06.22 |
申请号 |
EP20040078331 |
申请日期 |
2004.12.09 |
申请人 |
DRAKA COMTEQ B.V. |
发明人 |
JOURDIER, PIERRYLE;WANE NGUILA, CLAIRE;FLEURY, LUDOVIC |
分类号 |
C03B37/012;G02B6/02;G02B6/036;(IPC1-7):C03B37/012;G02B6/16 |
主分类号 |
C03B37/012 |
代理机构 |
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