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    Halogen co-doped optical fibers
    3.
    发明授权
    Halogen co-doped optical fibers 有权

    公开(公告)号：US11175450B2

    公开(公告)日：2021-11-16

    申请号：US16529179

    申请日：2019-08-01

    Applicant: CORNING INCORPORATED

    Inventor： Dana Craig Bookbinder ,  Steven Bruce Dawes ,  Phong Diep ,  Brian Lee Harper ,  Pushkar Tandon

    IPC: G02B6/028 ,  C03B37/014 ,  G02B6/036

    Abstract: A method of forming an optical fiber, including: exposing a soot core preform to a dopant gas at a pressure of from 1.5 atm to 40 atm, the soot core preform comprising silica, the dopant gas comprising a first halogen doping precursor and a second halogen doping precursor, the first halogen doping precursor doping the soot core preform with a first halogen dopant and the second halogen precursor doping the soot core preform with a second halogen dopant; and sintering the soot core preform to form a halogen-doped closed-pore body, the halogen-doped closed-pore body having a combined concentration of the first halogen dopant and the second halogen dopant of at least 2.0 wt %.

    METHOD OF MAKING UPDOPED CLADDING BY USING SILICON TERTRACHLORIDE AS THE DOPANT
    4.
    发明申请
    METHOD OF MAKING UPDOPED CLADDING BY USING SILICON TERTRACHLORIDE AS THE DOPANT 审中-公开
    通过使用硅酮作为鞣剂制备更好的覆盖物的方法

    公开(公告)号：US20160152510A1

    公开(公告)日：2016-06-02

    申请号：US14997780

    申请日：2016-02-15

    Applicant: Corning Incorporated

    Inventor： Brian Lee Harper ,  Rostislav Radiyevich Khrapko ,  Snigdharaj Kumar Mishra ,  Sonya Marie Raney ,  Pushkar Tandon

    IPC: C03B37/014

    CPC classification number: C03B37/01446 ,  C03B37/014 ,  C03B37/01453 ,  C03B2201/08 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/26 ,  C03C13/045 ,  C03C2201/11 ,  C03C2201/20

    Abstract: One embodiment of the disclosure relates to a method of making an optical fiber comprising the steps of: (i) exposing a silica based preform with at least one porous glass region having soot density of ρ to a gas mixture comprising SiCl4 having SiCl4 mole fraction ySiCl4 at a doping temperature Tdop such that parameter X is larger than 0.03 to form the chlorine treated preform, wherein X = 1 1 + [ ( ρ ρ s - ρ )  0.209748   T dop  Exp  [ - 5435.33 / T dop ] y SiCl   4 3 / 4 ] and ρs is the density of the fully densified soot layer; and (ii) exposing the chlorine treated preform to temperatures above 1400° C. to completely sinter the preform to produce sintered optical fiber preform with a chlorine doped region; and (iii) drawing an optical fiber from the sintered optical preform.

    Abstract translation: 本公开的一个实施方案涉及一种制造光纤的方法，包括以下步骤：（i）将二氧化硅基预型体暴露于具有烟炱密度的至少一个多孔玻璃区域; 在掺杂温度Tdop下将SiCl 4的SiCl 4摩尔分数为ySiCl4的气体混合物混合，使得参数X大于0.03以形成经氯处理的预制件，其中X = 11 + [（＆rgr; s - ＆rgr;））0.209748 实验表明，完全致密的煤烟层的密度为 和（ii）将氯处理的预制件暴露于高于1400℃的温度下，以完全烧结预成型件，以制备具有氯掺杂区域的烧结光纤预制件; 和（iii）从烧结的光学预型件拉制光纤。

    HALOGEN-DOPED SILICA FOR OPTICAL FIBER PREFORMS
    6.
    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.

    Burner shield to reduce soot buildup
    7.
    发明授权
    Burner shield to reduce soot buildup 有权
    燃烧器护罩减少烟灰积聚

    公开(公告)号：US09540272B2

    公开(公告)日：2017-01-10

    申请号：US14284772

    申请日：2014-05-22

    Applicant: CORNING INCORPORATED

    Inventor： Dana Craig Bookbinder ,  Brian Lee Harper ,  Mothivel Balaiyya Mummudi-Boopathy ,  Pushkar Tandon

    IPC: C03B37/018 ,  F23D99/00 ,  C03B37/014

    CPC classification number: C03B37/01815 ,  C03B37/0142 ,  C03B2207/40 ,  F23D91/02 ,  F23D99/003 ,  Y02P40/57

    Abstract: A soot deposition burner assembly, having at least one burner including a burner face on a first surface of a burner support. The burner produces a flame which extends generally perpendicularly to the first surface. A burner shield includes a first wall extending generally perpendicularly from the first surface surrounding the burner face. The burner shield has a base end with a first surface area facing toward the first surface and a shield face with a second surface area facing away from the first surface. To reduce the buildup of soot material, the second surface area is smaller than the first surface area, and the wall thickness is less at the shield face than the base end. Additionally, air can be directed along an exterior surface of the first wall from the base end toward the shield face to further reduce soot buildup.

    Abstract translation: 一种烟灰沉积燃烧器组件，其具有至少一个燃烧器，其包括在燃烧器支撑件的第一表面上的燃烧器面。 燃烧器产生大致垂直于第一表面延伸的火焰。 燃烧器护罩包括从围绕燃烧器表面的第一表面大致垂直延伸的第一壁。 燃烧器防护罩具有基端，第一表面区域面向第一表面，屏蔽面具有背离第一表面的第二表面区域。 为了减少烟灰材料的积聚，第二表面积小于第一表面积，并且在屏蔽面上的壁厚小于基端。 此外，空气可以沿着第一壁的外表面从基端朝向屏蔽面引导，以进一步减少烟灰积聚。

    Halogen-doped silica preforms for optical fibers
    8.
    发明授权
    Halogen-doped silica preforms for optical fibers 有权

    公开(公告)号：US11198635B2

    公开(公告)日：2021-12-14

    申请号：US16529123

    申请日：2019-08-01

    Applicant: CORNING INCORPORATED

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

    IPC: C03C3/06 ,  C03B37/014

    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 in a gas-phase environment that has a low partial pressure of impermeable gases. Impermeable gases are difficult to remove from halogen-doped fiber preforms and lead to defects in optical fibers drawn from the preforms. A low partial pressure of impermeable gases in the sintering environment leads to a low concentration of impermeable gases and a low density of gas-phase voids in densified halogen-doped silica. Preforms with fewer defects result.

    Halogen-doped silica for optical fiber preforms
    9.
    发明授权
    Halogen-doped silica for optical fiber preforms 有权

    公开(公告)号：US10947149B2

    公开(公告)日：2021-03-16

    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 ,  C03C13/04 ,  C03C3/06 ,  G02B6/02 ,  C03B37/018

    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.

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