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85 条记录 (耗时 0.012 秒)

    Plasma torch and an apparatus for producing fused silica using plasma arc electrodes
    42.
    发明授权
    Plasma torch and an apparatus for producing fused silica using plasma arc electrodes 失效
    等离子火炬和使用等离子弧电极生产熔融石英的设备

    公开(公告)号：US5376767A

    公开(公告)日：1994-12-27

    申请号：US093710

    申请日：1993-07-20

    申请人： Charles P. Heanley ,  John K. Williams ,  Takumi Fukunishi ,  Takao Matsuoka

    发明人： Charles P. Heanley ,  John K. Williams ,  Takumi Fukunishi ,  Takao Matsuoka

    IPC分类号： C03B20/00 ,  C03B19/01 ,  C03B37/012 ,  C03C3/06 ,  C23C4/10 ,  H05H1/34 ,  H05H1/42 ,  H05H1/44 ,  B23K10/00

    CPC分类号： C03B19/01 ,  C03B37/01291 ,  C23C4/11 ,  H05H1/42 ,  H05H1/44

    摘要： An apparatus for producing fused silica includes at least one anodic plasma arc electrode and at least one cathodic plasma arc electrode adjustably arranged with respect to one another so that the plasma arcs formed thereby couple together to form a plasma arc coupling zone. A feedstock material is fed into a region between the electrodes or to a region near the electrodes where the plasma arc coupling zone is formed. A platform is located beneath the plasma arc coupling zone to receive the silica product which is formed in the plasma arc coupling zone. The platform may be rotated about its axis and move up and down along its axis. A cooling device also may be included with the platform. The plasma anode torch used in the apparatus includes a cylindrical nozzle with a non-consumable, copper, blunt ended electrode disposed therein. A channel is provided between the electrode and the nozzle wall to allow the plasma gas to pass through the torch.

    摘要翻译： 用于生产熔凝石英的装置包括至少一个阳极等离子弧电极和至少一个相对于彼此可调节地布置的阴极等离子弧电极，使得形成的等离子弧由此耦合在一起以形成等离子弧耦合区。 原料材料被供给到电极之间的区域或者在形成等离子体电弧耦合区域的电极附近的区域中。 平台位于等离子弧耦合区之下，以接收在等离子弧耦合区中形成的二氧化硅产物。 平台可绕其轴线旋转并沿其轴线上下移动。 平台还可以包括冷却装置。 在该设备中使用的等离子体阳极手电筒包括一个圆柱形喷嘴，其具有设置在其中的不消耗的铜，钝端电极。 在电极和喷嘴壁之间提供通道，以允许等离子体气体通过焊炬。

    Method for forming doped optical preforms
    44.
    发明授权
    Method for forming doped optical preforms 失效
    用于形成掺杂的光学预型件的方法

    公开(公告)号：US4689212A

    公开(公告)日：1987-08-25

    申请号：US863160

    申请日：1986-05-14

    申请人： Robert J. Mansfield

    发明人： Robert J. Mansfield

    IPC分类号： G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03B37/018 ,  C23C16/513 ,  B05D1/08

    CPC分类号： C23C16/513 ,  C03B37/01291 ,  C03B37/01426 ,  C03B2201/34

    摘要： An optical fiber preform is formed by plasma chemical vapor deposition utilizing a plasma torch that includes a chamber into which a plasma starting gas, such as argon, is introduced and converted to a plasma by application of high frequency electromagnetic energy. A suitable entry port is provided in the torch chamber to allow dopant material in solid form to be introduced directly into the plasma for vaporization or ionization. The dopant material passes into a lower temperature region where gaseous silica precursor gases are introduced to undergo reaction in the presence of the vaporized dopant to form appropriately doped silica particles for deposition onto a substrate. Solid dopants of low volitility or vapor pressure may be used as dopants which could not otherwise be used in vapor deposition processes. The absence of hydrogen in the reaction dynamics results in a preform having greatly reduced hydroxyl ion content. If desired, a high-purity starting glass, rather than the precursor gases, can be introduced directly into the plasma to form the appropriately doped material.

    Overcladding an optical fiber preform using an air-argon plasma torch
    48.
    发明授权
    Overcladding an optical fiber preform using an air-argon plasma torch 失效
    使用空气 - 氩等离子体焰炬包覆光纤预制棒

    公开(公告)号：US07703305B2

    公开(公告)日：2010-04-27

    申请号：US11397688

    申请日：2006-04-05

    申请人： Jacques Jolly ,  Virginie Herchuelz ,  Rémi Fauche ,  Eric Tutin ,  Jean-Florent Campion

    发明人： Jacques Jolly ,  Virginie Herchuelz ,  Rémi Fauche ,  Eric Tutin ,  Jean-Florent Campion

    IPC分类号： C03B37/018

    CPC分类号： C03B37/01291

    摘要： The present invention provides an installation for fabricating or overcladding an optical fiber preform, which installation includes an inductive torch for producing a plasma from a plasma generating gas and material feed means and is characterized in that said plasma generating gas is a mixture of a first gas chosen from diatomic gases and mixtures of at least two gases and argon in a proportion by volume from 0.5% to 10%.

    摘要翻译： 本发明提供了一种用于制造或包覆光纤预制件的装置，该装置包括用于从等离子体产生气体和材料进料装置产生等离子体的感应炬，其特征在于所述等离子体产生气体是第一气体 选自双原子气体和至少两种气体和氩气的混合物，体积比为0.5％至10％。

    Method and apparatus for plasma buildup of an optical fiber preform, while reducing nitrogen oxides
    50.
    发明申请
    Method and apparatus for plasma buildup of an optical fiber preform, while reducing nitrogen oxides 失效
    同时减少氮氧化物的光纤预制件的等离子体积聚的方法和装置

    公开(公告)号：US20040107898A1

    公开(公告)日：2004-06-10

    申请号：US10725003

    申请日：2003-12-02

    申请人： ALCATEL

    发明人： Andre Appriou ,  Charles Truchot ,  Sabine Guina

    IPC分类号： C23C016/00 ,  B05D005/06 ,  H05H001/24

    CPC分类号： C03B37/01291 ,  C03B37/01426

    摘要： Apparatus (1) is dedicated to plasma buildup of an optical fiber preform (2). The apparatus comprises firstly a plasma torch (3) fed with plasma-generating gas by primary feed means (5) and arranged in such a manner as to enable a buildup material to be deposited on a primary preform (2) for building up in the presence of a silica-based material, and secondly secondary feed means (9) arranged to introduce at least one reducing element upstream from the primary preform (2), the reducing element reacting to induce reduction of the nitrogen oxides produced by the interaction between nitrogen and oxygen of the air contained in the enclosure in which buildup takes place in the presence of the plasma generated by the plasma torch (3).

    摘要翻译： 装置（1）专用于光纤预制棒（2）的等离子体积聚。 该装置首先包括通过初级进料装置（5）供给等离子体产生气体的等离子体焰炬（3），并以这样一种方式布置，使得能够将沉积材料沉积在初级预制件（2）上，以便在 存在二氧化硅基材料，其次二次进料装置（9）被布置成在初级预型件（2）的上游引入至少一个还原元件，所述还原元件反应以引起由氮气之间的相互作用产生的氮氧化物的还原 以及在由等离子体焰炬（3）产生的等离子体存在的情况下，包含在壳体中的空气的氧气，其中发生积聚。