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    Plasma torch for overcladding an optical fiber preform
    1.
    发明授权
    Plasma torch for overcladding an optical fiber preform 有权
    用于包覆光纤预制棒的等离子火炬

    公开(公告)号：US07854145B2

    公开(公告)日：2010-12-21

    申请号：US11769092

    申请日：2007-06-27

    申请人： Cedric Gonnet ,  Laurent Calvo ,  Emmanuel Petitfrere

    发明人： Cedric Gonnet ,  Laurent Calvo ,  Emmanuel Petitfrere

    IPC分类号： C03B37/018

    CPC分类号： H05H1/30 ,  C03B37/01291 ,  Y02P40/57

    摘要： Disclosed is a plasma torch for overcladding a primary preform of an optical fiber. The plasma torch includes a confinement tube for confining an induced plasma and a torch base. The torch base has a ceramic surface internal to the confinement tube. The plasma torch has extended life even at high input powers.

    摘要翻译： 公开了用于包覆光纤初级预制件的等离子体焰炬。 等离子体焰炬包括用于限制诱导等离子体和焊炬底座的限制管。 割炬底座内部有一个陶瓷表面。 即使在高输入功率下，等离子体焰炬也延长了使用寿命。

    Method and apparatus for manufacturing low OH overcladding
    2.
    发明授权
    Method and apparatus for manufacturing low OH overcladding 有权
    低OH外包制造方法和装置

    公开(公告)号：US08028545B2

    公开(公告)日：2011-10-04

    申请号：US11615727

    申请日：2006-12-22

    申请人： Emmanuel Petitfrere ,  Laurent Calvo ,  Cedric Gonnet

    发明人： Emmanuel Petitfrere ,  Laurent Calvo ,  Cedric Gonnet

    IPC分类号： C03B37/07

    CPC分类号： C03B37/01291

    摘要： The invention relates to a method for manufacturing a final optical fiber preform by overcladding, said method comprising the steps of providing a primary preform; positioning said primary preform within at least one tube, wherein the at least one tube partly covers the primary preform to create a zone to be overcladded, being an overclad zone, which overclad zone is located on the primary preform outside the at least one tube; injecting a gas into the annular space between the primary preform and the at least one tube under overpressure relative to the pressure outside the at least one tube; overcladding the primary preform in the overclad zone with an overcladding material using an overcladding device. The invention also relates to an apparatus for carrying out the method. The invention allows overcladding a primary preform at low cost while maximally limiting the incorporation of impurities into the silica overclad.

    摘要翻译： 本发明涉及一种用于通过外包制造最终光纤预制件的方法，所述方法包括以下步骤：提供初级预制件; 将所述初级预制件定位在至少一个管内，其中所述至少一个管部分地覆盖所述初级预制件以形成将被包覆的区域，作为外包层区域，所述外包层区域位于所述至少一个管子的所述初级预制件的外侧; 相对于至少一个管外部的压力，在超压下将气体注入到初级预制件和至少一个管之间的环形空间中; 使用外包装装置用外包装材料在外包层区域中包覆初级预制件。 本发明还涉及一种用于执行该方法的装置。 本发明允许以低成本包覆初级预制件，同时最大限度地限制杂质掺入二氧化硅外包层中。

    Plasma Torch for Overcladding an Optical Fiber Preform
    3.
    发明申请
    Plasma Torch for Overcladding an Optical Fiber Preform 有权
    用于包覆光纤预制件的等离子火炬

    公开(公告)号：US20070295033A1

    公开(公告)日：2007-12-27

    申请号：US11769092

    申请日：2007-06-27

    申请人： Cedric Gonnet ,  Laurent Calvo ,  Emmanuel Petitfrere

    发明人： Cedric Gonnet ,  Laurent Calvo ,  Emmanuel Petitfrere

    IPC分类号： C03C25/00 ,  B23K9/00

    CPC分类号： H05H1/30 ,  C03B37/01291 ,  Y02P40/57

    摘要： Disclosed is a plasma torch for overcladding a primary preform of an optical fiber. The plasma torch includes a confinement tube for confining an induced plasma and a torch base. The torch base has a ceramic surface internal to the confinement tube. The plasma torch has extended life even at high input powers.

    摘要翻译： 公开了用于包覆光纤初级预制件的等离子体焰炬。 等离子体焰炬包括用于限制诱导等离子体和焊炬底座的限制管。 割炬底座内部有一个陶瓷表面。 即使在高输入功率下，等离子体焰炬也延长了使用寿命。

    Method for making a preform
    4.
    发明申请
    Method for making a preform 审中-公开
    制作预成型件的方法

    公开(公告)号：US20050144987A1

    公开(公告)日：2005-07-07

    申请号：US10978335

    申请日：2004-11-02

    申请人： Emmanuel Petitfrere ,  Cedric Gonnet

    发明人： Emmanuel Petitfrere ,  Cedric Gonnet

    IPC分类号： C03B37/012 ,  C03B37/018

    CPC分类号： C03B37/01251 ,  C03B37/01291 ,  C03B2205/47

    摘要： A method for producing an optical fiber preform (100) consists in producing a primary preform (110); drawing out an end portion (115) of the primary preform (110) to produce a tail portion (115); thickening (120) the primary preform; and forming a cone (130) on the drawn out tail portion at the end of the primary preform. As a result of drawing out an end portion of the primary preform, the amount of primary preform required for cone formation is reduced while simultaneously optimizing cone length and angle appropriate to good initiation of fiber drawing.

    摘要翻译： 一种光纤预制棒（100）的制造方法，在于制造初级预制件（110）。 拉出初级预制件（110）的端部（115）以产生尾部（115）; 增加（120）初级预制件; 以及在所述初级预型件的端部处的所述拉出的尾部上形成锥体（130）。 通过拉出初级预制件的端部部分，锥形成形所需的初级预制件的量减少，同时优化适于良好起始拉丝的锥体长度和角度。

    Method and Apparatus for Manufacturing an Optical Fiber Preform
    5.
    发明申请
    Method and Apparatus for Manufacturing an Optical Fiber Preform 审中-公开
    制造光纤预制件的方法和装置

    公开(公告)号：US20080250817A1

    公开(公告)日：2008-10-16

    申请号：US12056988

    申请日：2008-03-27

    申请人： Emmanuel Petitfrere ,  Laurent Calvo

    发明人： Emmanuel Petitfrere ,  Laurent Calvo

    IPC分类号： C03B37/00

    CPC分类号： C03B37/01291

    摘要： The invention embraces a method for manufacturing an optical fiber preform. The primary preform is overcladded by projecting silica grain under a plasma torch, wherein, during overcladding, at least one region adjacent to the plasma torch is cooled by gas provided by at least one cooling nozzle. The invention facilitates low-cost preform overcladding in a way that limits the incorporation of impurities into the silica overcladding.

    摘要翻译： 本发明包括一种制造光纤预制棒的方法。 初级预制件通过在等离子体焰炬之下投射二氧化硅颗粒而被包覆，其中，在外包层期间，与等离子体焰炬相邻的至少一个区域由至少一个冷却喷嘴提供的气体冷却。 本发明以限制将杂质掺入二氧化硅外包层的方式促进了低成本预成型体包层。

    Method for overcladding an optical fiber preform
    6.
    发明授权
    Method for overcladding an optical fiber preform 有权
    用于包覆光纤预制件的方法

    公开(公告)号：US08181488B2

    公开(公告)日：2012-05-22

    申请号：US11765083

    申请日：2007-06-19

    申请人： Emmanuel Petitfrere

    发明人： Emmanuel Petitfrere

    IPC分类号： C03B37/07

    CPC分类号： C03B37/01291 ,  Y02P40/57

    摘要： Method for overcladding an optical fiber preform with a given target diameter (D0) of the final preform includes providing a primary preform to be overcladded, and successively depositing first overcladding layers by projecting and vitrifying silica particles on the primary preform moving in relative translation with a plasma torch. Each first overcladding layer has a given uniform thickness (d) and is deposited at a given, constant silica particle flow rate and at a given, constant translation speed. The method also includes the detection of a preform diameter (D1) greater than a given threshold (S) and the deposition of a final overcladding layer having the remaining required thickness (D0−D1) at a constant silica particle flow rate and at a reduced translation speed. The inventive method enables a preform to be overcladded efficiently with improved yield and high quality.

    摘要翻译： 用于包覆具有给定目标直径（D0）的光纤预制件的方法包括提供要包覆的初级预制件，并且通过将二氧化硅颗粒通过相对平移移动的主要预制件上的二氧化硅颗粒投影和玻璃化来连续沉积第一外包层， 等离子火炬 每个第一外包层具有给定的均匀厚度（d），并以给定的恒定的二氧化硅颗粒流速和给定的恒定的转换速度沉积。 该方法还包括检测大于给定阈值（S）的预制棒直径（D1）和具有剩余所需厚度（D0-D1）的最终外包层以恒定的二氧化硅颗粒流速和减少的 翻译速度。 本发明的方法使得预成型件能够以提高的产量和高质量被有效地包覆。

    Method for Forming an Improved Weld Between a Primary Preform and a Silica Bar
    8.
    发明申请
    Method for Forming an Improved Weld Between a Primary Preform and a Silica Bar 有权
    在初级预制件和硅胶棒之间形成改进的焊接的方法

    公开(公告)号：US20090078006A1

    公开(公告)日：2009-03-26

    申请号：US12056701

    申请日：2008-03-27

    申请人： Gaetan Cuvelier ,  Laurent Jardy ,  Emmanuel Petitfrere

    发明人： Gaetan Cuvelier ,  Laurent Jardy ,  Emmanuel Petitfrere

    IPC分类号： C03B37/012

    CPC分类号： C03B23/207 ,  C03B37/01205 ,  C03B37/02736 ,  C03B2205/30 ,  Y02P40/57

    摘要： The invention relates to a method for welding one end of a primary preform and one end of a silica bar having different properties. The method includes the steps of projecting and fusing silica grain under a plasma torch onto an end of the primary preform and an end of the silica bar, and bringing into contact these respective ends to form an excellent weld between the primary preform and the silica bar. The invention provides a cost-effective way to secure a primary preform to a glass-working lathe support while reducing the risk of costly preform breakage.

    摘要翻译： 本发明涉及一种用于焊接初级预制件的一端和具有不同特性的二氧化硅棒的一端的方法。 该方法包括以下步骤：将等离子体焰炬下方的二氧化硅颗粒投影并熔化到初级预制件的端部和二氧化硅棒的端部上，并使其与这些端部接触以在初级预制件和二氧化硅棒之间形成优异的焊接 。 本发明提供了一种成本有效的方法来将初级预制件固定到玻璃加工车床支撑件上，同时降低了昂贵的预制件断裂的风险。

    Method and apparatus for manufacturing an optical fiber preform
    9.
    发明授权
    Method and apparatus for manufacturing an optical fiber preform 有权

    公开(公告)号：US06584806B2

    公开(公告)日：2003-07-01

    申请号：US09916324

    申请日：2001-07-30

    申请人： Emmanuel Petitfrere ,  Gérard Lavanant ,  Benoit Gouez

    发明人： Emmanuel Petitfrere ,  Gérard Lavanant ,  Benoit Gouez

    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.