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    HALOGEN-DOPED SILICA FOR OPTICAL FIBER PREFORMS
    33.
    发明申请
    HALOGEN-DOPED SILICA FOR OPTICAL FIBER PREFORMS 审中-公开

    公开(公告)号：US20190127264A1

    公开(公告)日：2019-05-02

    申请号：US16167830

    申请日：2018-10-23

    Applicant: Corning Incorporated

    Inventor： Dana Craig Bookbinder ,  Steven Bruce Dawes ,  Richard Michael Fiacco ,  Brian Lee Harper ,  Ming-Jun Li ,  Pushkar Tandon

    IPC: C03B37/014 ,  C03B19/14 ,  G02B6/02 ,  C03C3/06 ,  C03C13/04

    Abstract: Preparation of halogen-doped silica is described. The preparation includes doping silica with high halogen concentration and sintering halogen-doped silica to a closed-pore state. The sintering includes a high pressure sintering treatment and a low pressure sintering treatment. The high pressure sintering treatment is conducted in the presence of a high partial pressure of a gas-phase halogen doping precursor and densifies a silica soot body to a partially consolidated state. The low pressure sintering treatment is conducted in the presence of a low partial pressure of gas-phase halogen doping precursor and transforms a partially consolidated silica body to a closed-pore state. The product halogen-doped silica glass exhibits little foaming when heated to form fibers in a draw process or core canes in a redraw process.

    Refractory vessels and methods for forming same
    35.
    发明授权
    Refractory vessels and methods for forming same 有权
    耐火容器及其形成方法

    公开(公告)号：US08974897B2

    公开(公告)日：2015-03-10

    申请号：US14215762

    申请日：2014-03-17

    Applicant: Corning Incorporated

    Inventor： Steven Bruce Dawes ,  Douglas Hull Jennings

    IPC: C03B19/06 ,  C30B35/00 ,  C30B11/00 ,  C30B15/10 ,  C30B28/06 ,  C30B29/06 ,  C03B19/09

    CPC classification number: C03B19/066 ,  C03B19/09 ,  C30B11/002 ,  C30B15/10 ,  C30B28/06 ,  C30B29/06 ,  C30B35/002

    Abstract: The disclosure relates to methods of forming a vessel and to the resulting vessel. The vessel may be formed by providing a first fumed silica soot layer comprised of primary particles of fumed silica soot, and then providing over the first fumed silica soot layer a second fumed silica soot layer comprised of agglomerated particles formed into an agglomerated form from primary particles of fumed silica soot. The primary particles of the first fumed silica soot layer may have a substantially uniform density distribution, and the agglomerated particles of the second fumed silica soot layer may have a substantially non-uniform density distribution. The methods may include consolidating the first and second soot layers together to form a consolidated body.

    Abstract translation: 本公开涉及形成容器和所得容器的方法。 可以通过提供由热解法二氧化硅烟灰的初级颗粒组成的第一热解法二氧化硅烟灰层形成容器，然后在第一热解法二氧化硅烟灰层上提供第二热解法二氧化硅烟灰层，该第二热解法二氧化硅烟灰层由从一次颗粒形成凝聚形式的附聚颗粒 的气相二氧化硅烟灰。 第一热解法二氧化硅烟灰层的初级颗粒可以具有基本均匀的密度分布，并且第二热解法二氧化硅烟灰层的附聚颗粒可具有基本上不均匀的密度分布。 所述方法可以包括将第一和第二烟灰层合并在一起以形成固结体。

    OPTICAL PREFORMS AND METHODS FOR FORMING THE SAME
    37.
    发明申请
    OPTICAL PREFORMS AND METHODS FOR FORMING THE SAME 有权
    光学前体及其形成方法

    公开(公告)号：US20140363670A1

    公开(公告)日：2014-12-11

    申请号：US14294389

    申请日：2014-06-03

    Applicant: CORNING INCORPORATED

    Inventor： Dana Craig Bookbinder ,  Steven Bruce Dawes ,  Richard Michael Fiacco ,  Andrey V. Filippov ,  Pushkar Tandon

    IPC: C03B37/012 ,  C03B37/10

    CPC classification number: C03B37/01282 ,  C03B19/09 ,  Y02P40/57 ,  Y10T428/2927

    Abstract: Optical preforms and methods for forming optical preforms are disclosed. According to one embodiment, a method for producing an optical preform includes compressing silica-based glass soot to form a porous optical preform comprising a soot compact. The porous optical preform is heated to a dwell temperature greater than or equal to 100° C. Thereafter, the porous optical preform is humidified at the dwell temperature in a water-containing atmosphere having a dew point greater than or equal to 30° C. to form a humidified porous optical preform. The soot compact portion of the humidified porous optical preform generally comprises greater than or equal to 0.5 wt. % water.

    Abstract translation: 公开了用于形成光学预型件的光学预型件和方法。 根据一个实施例，用于制造光学预型件的方法包括压缩二氧化硅基玻璃烟炱以形成包括烟炱压块的多孔光学预制件。 多孔光学预成型体被加热到大于或等于100℃的停留温度。此后，多孔光学预型体在露点大于或等于30℃的含水气氛中在停留温度下加湿。 以形成加湿的多孔光学预型件。 加湿多孔光学预型件的烟灰紧凑部分通常包括大于或等于0.5wt。 ％ 水。

    METHOD FOR MAKING LOW BEND LOSS OPTICAL FIBER PREFORMS
    38.
    发明申请
    METHOD FOR MAKING LOW BEND LOSS OPTICAL FIBER PREFORMS 有权
    制造低弯折光纤预制件的方法

    公开(公告)号：US20140352361A1

    公开(公告)日：2014-12-04

    申请号：US14278437

    申请日：2014-05-15

    Applicant: Corning Incorporated

    Inventor： Steven Bruce Dawes ,  Pushkar Tandon

    IPC: C03B37/012 ,  G02B6/02

    CPC classification number: C03B37/012 ,  C03B37/01453 ,  C03B2201/12 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/26 ,  G02B6/02038 ,  G02B6/0283 ,  G02B6/03627 ,  G02B6/0365

    Abstract: A method of making an optical fiber preform comprising in order: (i) manufacturing a glass preform with at least one porous layer; (ii) exposing the glass preform with at least one porous layer to a fluorine precursor at temperature below 1295° C. to make a fluorine treated preform, and (iii) exposing the fluorine treated glass preform with at least one porous silica based layer the temperatures above 1400° C. to completely sinter the preform. Preferably, the porous silica based layer of the glass preform exposed to fluorine precursor has average density of at least 0.7 g/cm3 but less than 1.9 g/cm3.

    Abstract translation: 一种制造光纤预制件的方法，其顺序为：（i）制造具有至少一个多孔层的玻璃预制件; （ii）在低于1295℃的温度下将具有至少一个多孔层的玻璃预制件暴露于氟前体，以制备经氟处理的预制件，和（iii）将氟处理的玻璃预制件与至少一个多孔二氧化硅基层 温度高于1400℃，以完全烧结预制件。 优选地，暴露于氟前体的玻璃预制件的多孔二氧化硅基层的平均密度为至少0.7g / cm 3，但小于1.9g / cm 3。

    Slow cooling of optical fibers having halogen doped cores
    39.
    发明授权
    Slow cooling of optical fibers having halogen doped cores 有权

    公开(公告)号：US11802070B2

    公开(公告)日：2023-10-31

    申请号：US17308409

    申请日：2021-05-05

    Applicant: CORNING INCORPORATED

    Inventor： Steven Bruce Dawes ,  Pushkar Tandon

    IPC: C03B37/027 ,  C03B37/025 ,  C03B37/029

    CPC classification number: C03B37/02718 ,  C03B37/029 ,  C03B37/0253 ,  C03B2201/20

    Abstract: A method of processing an optical fiber includes drawing the optical fiber from an optical fiber preform within a draw furnace, the optical fiber extending from the draw furnace along a process pathway, the optical fiber comprising at least one halogen-doped core; and drawing the optical fiber through at least one slow cooling device positioned downstream from the draw furnace at a draw speed. The at least one slow cooling device exposes the optical fiber to a slow cooling device process temperature greater than or equal to 800° C. and less than or equal to 1600° C. The draw speed is such that the optical fiber has a residence time of at least 0.1 s in the at least one slow cooling device. An optical fiber made by such a process is also disclosed.

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