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1.发明授权公开(公告)号：US11046608B2
公开(公告)日：2021-06-29
申请号：US14911522
申请日：2013-08-13
申请人： DRAKA COMTEQ BV
IPC分类号： C03C13/04 , C03C25/1065 , C03B37/018 , C03B37/012 , C03C3/06
摘要： The invention relates to an optical fiber preform (20) comprising a primary preform (21) and one or more purified silica-based overclad layers (22) surrounding said primary preform (21), the purified silica-based overclad layers (22) comprising lithium and aluminium, and having a ratio between lithium concentration [Li] and aluminium concentration [Al] satisfying the following inequality: 1×10−3≤[Li]/[Al]≤20×10−3.
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2.发明申请OPTICAL FIBER PREFORM AND METHOD FOR MANUFACTURING SUCH OPTICAL FIBER PREFORM FROM A PRIMARY PREFORM 审中-公开光纤预制件和从主要预制件制造这种光纤预制件的方法公开(公告)号：US20160185649A1
公开(公告)日：2016-06-30
申请号：US14911522
申请日：2013-08-13
申请人： DRAKA COMTEQ BV
IPC分类号： C03B37/018 , C03C13/04
摘要： The invention relates to an optical fiber preform (20) comprising a primary preform (21) and one or more purified silica-based overclad layers (22) surrounding said primary preform (21), the purified silica-based overclad layers (22) comprising lithium and aluminium, and having a ratio between lithium concentration [Li] and aluminium concentration [Al] satisfying the following inequality (Formula (I)). 1.103≦[Li]/[Al]≦20.103 (1)
摘要翻译： 本发明涉及一种包括初级预制件（21）和围绕所述初级预制件（21）的一种或多种纯化的基于二氧化硅的外包层（22）的光纤预制件（20），所述纯化的基于二氧化硅的外包层（22）包括 锂和铝，并且具有满足以下不等式（式（I））的锂浓度[Li]和铝浓度[Al]之间的比率。 1.103＆nlE; [Li] / [Al]＆nlE; 20.103（1）
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