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1. 发明授权

US5676863A Induction plasma torch 失效
标题翻译：感应等离子体焰炬
公开(公告)号：US5676863A
公开(公告)日：1997-10-14
申请号：US501295
申请日：1995-07-12
申请人： Bernard Jouvenel , Pierre Ripoche
发明人： Bernard Jouvenel , Pierre Ripoche
IPC分类号： C03B37/012 , C03B37/014 , H05H1/26 , H05H1/30 , B23K10/00
CPC分类号： H01J37/32495 , C03B37/01291 , C03B37/01426 , H05H1/26 , H05H1/30
摘要： The present invention relates to an induction plasma torch of the type used in plasma deposition methods for depositing pure or doped silica when manufacturing preforms for optical fibers, the plasma torch comprising: a "reaction" tube inside which a plasma production zone is located; means for injecting reagents for forming the pure or doped silica to be deposited into the tube towards the plasma production zone; feed means for feeding plasma-generating gases into the tube towards the plasma production zone; and an induction coil surrounding the tube for supplying the energy required to form the plasma; wherein the tube is protected against the thermal cycles due to variations in the temperature inside the tube by means of a protective lining deposited on the inside wall of the reaction tube at the plasma production zone so as to surround the zone, the lining being made of a material based on silica, and having a thickness of less than 2 mm.
摘要翻译：本发明涉及一种用于在制造用于光纤的预成型件时沉积纯或掺杂二氧化硅的等离子体沉积方法中的类型的感应等离子体焰炬，所述等离子体焰炬包括：等离子体生产区所在的“反应”管; 用于注入用于形成待沉积到管中的纯的或掺杂的二氧化硅朝向等离子体生产区的试剂的装置; 用于将等离子体产生气体送入等离子体产生区域的进料装置; 以及围绕所述管的用于提供形成所述等离子体所需的能量的感应线圈; 其中通过沉积在等离子体生产区的反应管的内壁上的保护衬层，由于管内温度的变化来保护管免受热循环，从而围绕该区，衬层由基于二氧化硅的材料，其厚度小于2mm。

2. 发明授权

US5522007A 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
标题翻译：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。

3. 发明授权

US6007786A Device for doping silica powder 失效
标题翻译：二氧化硅粉末掺杂装置
公开(公告)号：US6007786A
公开(公告)日：1999-12-28
申请号：US862172
申请日：1997-05-20
申请人： Jean-Florent Campion , Bernard Jouvenel , Laurent Gasca
发明人： Jean-Florent Campion , Bernard Jouvenel , Laurent Gasca
IPC分类号： C03B37/012 , B01J19/00 , C01B33/02 , C01B33/18 , C03B20/00 , B01J8/00 , C03B19/06
CPC分类号： C01B33/18 , C01P2002/54
摘要： A device for doping silica powder with a dopant includes an arrangement for receiving silica soot particles or previously fabricated silica granules. The particles or granules contained in the receiving arrangement are heated to a temperature sufficient to allow agglomeration of the soot particles into granules followed by densification of the granules. The receiving arrangement is fed with a precursor gas of the dopant so that the granules are heated in an atmosphere containing the precursor gas, which causes the dopant to be incorporated into the granules during their densification to produce densified and doped silica grains. The receiving arrangement is mobile so that, during their movement, each of the granules that it contains is subject to movement such that substantially all of its outside surface is exposed to the atmosphere containing the precursor gas.
摘要翻译：用掺杂剂掺杂二氧化硅粉末的装置包括用于接收二氧化硅烟灰颗粒或预先制备的二氧化硅颗粒的装置。将包含在接收装置中的颗粒或颗粒加热到足以使烟灰颗粒附聚成颗粒的温度，随后使颗粒致密化。接收装置供给掺杂剂的前体气体，使得颗粒在包含前体气体的气氛中被加热，这使得掺杂剂在其致密化期间被引入颗粒中以产生致密和掺杂的二氧化硅颗粒。接收装置是可移动的，使得在其移动期间，其包含的每个颗粒经受运动，使得其大部分外表面暴露于含有前体气体的气氛中。

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