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1.发明授权Method of building up an optical fiber preform by plasma deposition, and an optical fiber obtained from the preform built up by the method 失效通过等离子体沉积建立光纤预制件的方法，以及由该方法构成的预制件获得的光纤
公开(公告)号：US5522007A
公开(公告)日：1996-05-28
申请号：US355336
申请日：1994-12-12
申请人： Alain Drouart , Benoit Gouez , Bernard Jouvenel , Yves Lumineau , Max Matau , Pierre Ripoche
发明人： Alain Drouart , Benoit Gouez , Bernard Jouvenel , Yves Lumineau , Max Matau , Pierre Ripoche
IPC分类号： G02B6/00 , C03B37/012 , C03B37/014 , C03B37/018 , G02B6/44 , G02B6/22
CPC分类号： C03B37/01291 , C03B37/01413
摘要： A method of using a plasma to build up an optical fiber preform consists in injecting hydroxyl ions in a controlled manner into the build-up silica that is deposited on the preform. The invention is applicable to the manufacture of optical fibers, in particular monomode fibers.
摘要翻译： 使用等离子体来构建光纤预制棒的方法在于将受控方式的羟基离子注入到沉积在预型件上的积聚二氧化硅中。 本发明可应用于制造光纤，特别是单模光纤。
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2.发明授权公开(公告)号：US06269663B1
公开(公告)日：2001-08-07
申请号：US09137141
申请日：1998-08-20
IPC分类号： C03B3718
CPC分类号： C03C1/022 , C03B37/01291
摘要： The deposit of natural or synthetic silica comprises a preform (1) set into rotation (7) in front of a plasma torch (3) which moves back and forth substantially parallel to a longitudinal direction (L) of the preform (1), a feed duct (9) for feeding the plasma with grains of natural or synthetic silica (11), characterized in that the same feed duct (9) feeds the plasma with a fluorine or chlorine compound, preferably a fluorine compound, mixed with a carrier gas (15). Sodium or lithium contained in the grains of natural or synthetic silica reacts with the fluorine or chlorine of the fluorine or chlorine compound, making it possible to improve the optical quality of fibers built up with the natural or synthetic silica at reduced cost.
摘要翻译： 天然或合成二氧化硅的沉积物包括在基本上平行于预成型件（1）的纵向方向（L）前后移动的等离子体炬（3）前面设置旋转（7）的预成型件（1）， 用于将等离子体与天然或合成二氧化硅（11）的颗粒进料的进料管道（9），其特征在于，相同的进料管道（9）将等离子体与载体气体混合的氟化合物或氯化合物 （15）天然或合成二氧化硅颗粒中所含的钠或锂与氟或氯化合物的氟或氯反应，可以以降低的成本提高用天然或合成二氧化硅生成的纤维的光学质量 。
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公开(公告)号：US06584806B2
公开(公告)日：2003-07-01
申请号：US09916324
申请日：2001-07-30
IPC分类号： C03B37018
CPC分类号： C03B37/01291 , Y02P40/57
摘要： A method of manufacturing a preform, the method comprising rotating a primary preform about an axis X, establishing relative displacement in translation between the preform and a plasma torch, and introducing a glass powder into the plasma flame, the glass powder being accelerated prior to penetrating into the plasma flame by an accelerator gas introduced into the flow of glass powder, said process being performed in an enclosure and said introduction being performed into an atmosphere at a regulated pressure lower than the pressure outside the enclosure. Apparatus for manufacturing the preform comprises an enclosure connected to a unit for regulating the pressure inside the enclosure.
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