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    4.
    发明专利
    未知

    公开(公告)号：BR0208096A

    公开(公告)日：2006-11-14

    申请号：BR0208096

    申请日：2002-03-06

    Applicant: FIBERCORE INC

    Inventor： GOUSKOV MIKHAIL I ,  DANILOV EVGUENIE B ,  ASLAMI MOHD A ,  WU DAN

    IPC: C03B37/018 ,  C03B37/014 ,  C03B37/027 ,  C03B37/029

    Abstract: A plurality of glass deposition targets are rotated simultaneously and a first plasma torch, having a coil diameter larger than the sum of the target diameters, deposits glass simultaneously on the plurality. After the diameter of the targets reaches a threshold a second plasma torch is used. The diameter of the second plasma torch can provide for simultaneous deposition. In a further embodiment, after the target diameter reaches a second threshold a third plasma torch is used. In a further embodiment the spacing between the axes of rotation of the targets is widened as the target diameter increases. In a still further embodiment a single plasma torch includes movable concentric tubes within its coil to selectively operate as any of a plurality of different diameter plasma torches.

    5.
    发明专利
    未知

    公开(公告)号：AT299841T

    公开(公告)日：2005-08-15

    申请号：AT02713726

    申请日：2002-03-06

    Applicant: FIBERCORE INC

    Inventor： GOUSKOV MIKHAIL I ,  DANILOV EVGUENIE B ,  ASLAMI MOHD A ,  WU DAU

    IPC: C03B37/018 ,  C03B37/014 ,  C03B37/027

    Abstract: A plurality of glass deposition targets are rotated simultaneously and a first plasma torch, having a coil diameter larger than the sum of the target diameters, deposits glass simultaneously on the plurality. After the diameter of the targets reaches a threshold a second plasma torch is used. The diameter of the second plasma torch can provide for simultaneous deposition. In a further embodiment, after the target diameter reaches a second threshold a third plasma torch is used. In a further embodiment the spacing between the axes of rotation of the targets is widened as the target diameter increases. In a still further embodiment a single plasma torch includes movable concentric tubes within its coil to selectively operate as any of a plurality of different diameter plasma torches.

    METHOD FOR OFFLINE COLLAPSING A PREFORM
    7.
    发明专利
    METHOD FOR OFFLINE COLLAPSING A PREFORM 未知

    公开(公告)号：AU2002367308A1

    公开(公告)日：2003-07-24

    申请号：AU2002367308

    申请日：2002-07-11

    Applicant: FIBERCORE INC

    Inventor： HAMMERLE WOLFGANG ,  KOTZING JORG ,  ASLAMI MOHD A

    IPC: C03B37/018

    Abstract: A method and apparatus for making optical fiber preforms using modified chemical vapor deposition (MCVD) A starting tubular member is installed on a chemical vapor deposition apparatus and, using MCVD, a predetermined amount of selectively doped silica is deposited and consolidated on the inner surface to form an intermediate uncollapsed preform tube. At least a portion of the intermediate uncollapsed preform tube is removed from the chemical vapor deposition apparatus, installed in a collapsing apparatus and collapsed. The collapsing uses an oxy-hydrogen burner or a plasma torch. Optionally, additional deposition is performed during the collapsing operation. A stretching may be performed concurrent with the collapsing.

    METHOD FOR MAKING OPTICAL FIBER PREFORM USING SIMULTANEOUS INSIDE AND OUTSIDE DEPOSITION
    9.
    发明公开
    METHOD FOR MAKING OPTICAL FIBER PREFORM USING SIMULTANEOUS INSIDE AND OUTSIDE DEPOSITION 审中-公开
    METHOD FOR PRODUCING同时具有内外分离光纤预制棒

    公开(公告)号：EP1494976A4

    公开(公告)日：2006-02-01

    申请号：EP03716564

    申请日：2003-03-14

    Applicant: FIBERCORE INC

    Inventor： GUSKOV MIKHAIL I ,  DANILOV EVGUENIE B ,  HAMMERLE WOLFGANG ,  ASLAMI MOHD A ,  WU DAU

    IPC: C03B1/00 ,  C03B37/014 ,  C03B37/018

    CPC classification number: C03B37/01823 ,  C03B37/01426 ,  C03B37/01869

    Abstract: A method and apparatus for making optical fiber preforms using simultaneous plasma deposition on the inside and outside surface of a starting tube. A starting tubular member (12) is rotated, CFOT chemicals (22) are selectively injected into the plasma torch (16) and CFIT chemicals (24) are selectively injected to flow through the hollow of the tube (12). The plasma torch is traversed along the tubular member to simultaneously deposit soot on the inside and outside surface. The soot on one or both surfaces may be consolidated into a silica layer as it is deposited. The plasma torch (16) is traversed again to deposit additional soot, and/or consolidate previously deposited soot, on one or both surfaces. The process is repeated until a predetermined amount of silica is formed on the tubular member. The tubular member is then collapsed. Optionally, additional plasma deposition is performed during or after the collapsing.

    Abstract translation: 一种用于制造使用在起始管的内表面和外表面同时等离子体沉积光纤预制棒的方法和装置。 的起始的管状构件（12）旋转时，化学品CFOT（22）被选择性地注入到等离子体炬（16）和化学品CFIT（24）被选择性地注入通过管（12）的中空流动。 该等离子炬沿管状构件穿过内侧和外侧表面上同时沉积烟灰。 因为它被沉积在一个或两个表面上的烟灰可以被合并成一个二氧化硅层。 等离子体炬（16）被再次遍历存入额外煤烟和/或巩固先前沉积的烟灰，在一个或两个表面上。 重复该过程，直到二氧化硅的预定量是所述管状构件上形成。 然后将管状构件已折叠。 可选地，附加的等离子体沉积期间或塌陷之后进行。

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