公开(公告)号：US11524920B2

公开(公告)日：2022-12-13

申请号：US17112192

申请日：2020-12-04

Applicant: Corning Incorporated

Inventor： Sumitava De ,  Robert Clark Moore ,  Douglas Gregg Neilson ,  Pushkar Tandon

IPC: C03C25/12 ,  C03C25/105 ,  C03C25/18

Abstract: An optical fiber coating apparatus that provides increased gyre stability and reduced gyre strength, thereby providing a more reliable coating application process during fiber drawing includes a cone-only coating die having a conical entrance portion with a tapered wall angled at a half angle α, wherein 2°≤α≤25°, and a cone height L1 less than 2.2 mm, and a cylindrical portion having an inner diameter of d2, wherein 0.1 mm≤d2≤0.5 mm and a cylindrical height of L2, wherein 0.05 mm≤L2≤1.25 mm; a guide die having an optical fiber exit, the guide die disposed adjacent the cone-only coating die such that a wetted length (L5) between the optical fiber exit of the guide die and the entrance of the cone-only coating die is from 1 mm to 5 mm; and a holder for holding the cone-only coating die and the guide die in a fixed relationship defining a coating chamber between the guide die and the cone-only coating die, the coating chamber having an inner radius L6 from the optical fiber axis to an inner wall of the holder that is from 3 mm to 10 mm.

公开(公告)号：US10888894B2

公开(公告)日：2021-01-12

申请号：US15950243

申请日：2018-04-11

Applicant: Corning Incorporated

Inventor： Robert Clark Moore ,  Douglas Gregg Neilson ,  Johnnie Edward Watson

IPC: B05D1/18 ,  B05D3/06 ,  G02B6/02 ,  B05C11/10 ,  B05C3/12 ,  C03C25/106 ,  C03C25/1065 ,  C03C25/18 ,  C03C25/12 ,  B05C3/172 ,  B05C3/00 ,  B05D7/20

Abstract: A method of applying a coating liquid to an optical fiber is described. An optical fiber is drawn through a guide die into a pressurized coating chamber and through the pressurized coating chamber to a sizing die. The pressurized coating chamber contains a coating liquid. The method includes directing coating liquid in a direction transverse to the processing pathway of the optical fiber in the pressurized coating chamber. The transverse flow of coating liquid counteracts detrimental effects associated with gyres that form in the pressurized coating chamber during the draw process. Benefits of the transverse flow include removal of bubbles, reduction in the temperature of the gyre, improved wetting, homogenization of the properties of the coating liquid in the pressurized coating chamber, and stabilization of the meniscus.

公开(公告)号：US10882782B2

公开(公告)日：2021-01-05

申请号：US15868029

申请日：2018-01-11

Applicant: Corning Incorporated

Inventor： Sumitava De ,  Robert Clark Moore ,  Douglas Gregg Neilson ,  Pushkar Tandon

IPC: C03B25/12 ,  C03C25/105 ,  C03C25/18

Abstract: An optical fiber coating apparatus that provides increased gyre stability and reduced gyre strength, thereby providing a more reliable coating application process during fiber drawing includes a cone-only coating die having a conical entrance portion with a tapered wall angled at a half angle α, wherein 2°≤α≤25°, and a cone height L1 less than 2.2 mm, and a cylindrical portion having an inner diameter of d2, wherein 0.1 mm≤d2≤0.5 mm and a cylindrical height of L2, wherein 0.05 mm≤L2≤1.25 mm; a guide die having an optical fiber exit, the guide die disposed adjacent the cone-only coating die such that a wetted length (L5) between the optical fiber exit of the guide die and the entrance of the cone-only coating die is from 1 mm to 5 mm; and a holder for holding the cone-only coating die and the guide die in a fixed relationship defining a coating chamber between the guide die and the cone-only coating die, the coating chamber having an inner radius L6 from the optical fiber axis to an inner wall of the holder that is from 3 mm to 10 mm.

公开(公告)号：US20180304304A1

公开(公告)日：2018-10-25

申请号：US15950243

申请日：2018-04-11

Applicant: Corning Incorporated

Inventor： Robert Clark Moore ,  Douglas Gregg Neilson ,  Johnnie Edward Watson

IPC: B05D1/18 ,  B05D3/06 ,  B05C3/12 ,  B05C11/10 ,  G02B6/02

CPC classification number: B05D1/18 ,  B05C3/12 ,  B05C11/10 ,  B05D3/06 ,  C03C25/106 ,  C03C25/1065 ,  C03C25/12 ,  C03C25/18 ,  G02B6/02395

Abstract: A method of applying a coating liquid to an optical fiber is described. An optical fiber is drawn through a guide die into a pressurized coating chamber and through the pressurized coating chamber to a sizing die. The pressurized coating chamber contains a coating liquid. The method includes directing coating liquid in a direction transverse to the processing pathway of the optical fiber in the pressurized coating chamber. The transverse flow of coating liquid counteracts detrimental effects associated with gyres that form in the pressurized coating chamber during the draw process. Benefits of the transverse flow include removal of bubbles, reduction in the temperature of the gyre, improved wetting, homogenization of the properties of the coating liquid in the pressurized coating chamber, and stabilization of the meniscus.

公开(公告)号：US11440839B2

公开(公告)日：2022-09-13

申请号：US17112166

申请日：2020-12-04

Applicant: Corning Incorporated

Inventor： Sumitava De ,  Robert Clark Moore ,  Douglas Gregg Neilson ,  Pushkar Tandon

IPC: C03C25/18 ,  C03C25/105

Abstract: An optical fiber coating apparatus that provides increased gyre stability and reduced gyre strength, thereby providing a more reliable coating application process during fiber drawing includes a cone-only coating die having a conical entrance portion with a tapered wall angled at a half angle α, wherein 2°≤α≤25°, and a cone height L1 less than 2.2 mm, and a cylindrical portion having an inner diameter of d2, wherein 0.1 mm≤d2≤0.5 mm and a cylindrical height of L2, wherein 0.05 mm≤L2≤1.25 mm; a guide die having an optical fiber exit, the guide die disposed adjacent the cone-only coating die such that a wetted length (L5) between the optical fiber exit of the guide die and the entrance of the cone-only coating die is from 1 mm to 5 mm; and a holder for holding the cone-only coating die and the guide die in a fixed relationship defining a coating chamber between the guide die and the cone-only coating die, the coating chamber having an inner radius L6 from the optical fiber axis to an inner wall of the holder that is from 3 mm to 10 mm.

公开(公告)号：US09440873B2

公开(公告)日：2016-09-13

申请号：US13960092

申请日：2013-08-06

Applicant: Corning Incorporated

Inventor： Gary Alan Cummings ,  Samir Khanna ,  Douglas Gregg Neilson ,  Thomas Andre Pedersen ,  Massoud Rahiminejad ,  Bruce Warren Reding

IPC: C03B37/10 ,  C03B37/027

CPC classification number: C03B37/10 ,  C03B37/02718 ,  Y10T29/49391

Abstract: In one embodiment, an optical fiber cooling system includes a first cooling tube oriented substantially in parallel with and spaced apart from a second cooling tube such that an optical fiber pathway is positioned between the first cooling tube and the second cooling tube. The first cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the first cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the second cooling tube. The second cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the second cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the first cooling tube.

Abstract translation: 在一个实施例中，光纤冷却系统包括基本上与第二冷却管平行并间隔开的第一冷却管，使得光纤通路位于第一冷却管和第二冷却管之间。 第一冷却管包括沿着第一冷却管的轴向长度定位的多个冷却流体出口，其被定向成将冷却流体的流动横跨光纤通路朝向第二冷却管。 第二冷却管包括沿着第二冷却管的轴向长度定位的多个冷却流体出口，其被定向成将冷却流体的流动横跨光纤通路朝着第一冷却管引导。

公开(公告)号：US20130312461A1

公开(公告)日：2013-11-28

申请号：US13960092

申请日：2013-08-06

Applicant: Corning Incorporated

Inventor： Gary Alan Cummings ,  Samir Khanna ,  Douglas Gregg Neilson ,  Thomas Andre Pedersen ,  Massoud Rahiminejad ,  Bruce Warren Reding

IPC: C03B37/10

CPC classification number: C03B37/10 ,  C03B37/02718 ,  Y10T29/49391

Abstract: In one embodiment, an optical fiber cooling system includes a first cooling tube oriented substantially in parallel with and spaced apart from a second cooling tube such that an optical fiber pathway is positioned between the first cooling tube and the second cooling tube. The first cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the first cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the second cooling tube. The second cooling tube includes a plurality of cooling fluid outlets positioned along an axial length of the second cooling tube which are oriented to direct a flow of cooling fluid across the optical fiber pathway towards the first cooling tube.

Abstract translation: 在一个实施例中，光纤冷却系统包括基本上与第二冷却管平行并间隔开的第一冷却管，使得光纤通路位于第一冷却管和第二冷却管之间。 第一冷却管包括沿着第一冷却管的轴向长度定位的多个冷却流体出口，其被定向成将冷却流体的流动横跨光纤通路朝向第二冷却管。 第二冷却管包括沿着第二冷却管的轴向长度定位的多个冷却流体出口，其被定向成将冷却流体的流动横跨光纤通路朝着第一冷却管引导。

公开(公告)号：US20210087108A1

公开(公告)日：2021-03-25

申请号：US17112192

申请日：2020-12-04

Applicant: Corning Incorporated

Inventor： Sumitava De ,  Robert Clark Moore ,  Douglas Gregg Neilson ,  Pushkar Tandon

IPC: C03C25/105 ,  C03C25/18

Abstract: An optical fiber coating apparatus that provides increased gyre stability and reduced gyre strength, thereby providing a more reliable coating application process during fiber drawing includes a cone-only coating die having a conical entrance portion with a tapered wall angled at a half angle α, wherein 2°≤α≤25°, and a cone height L1 less than 2.2 mm, and a cylindrical portion having an inner diameter of d2, wherein 0.1 mm≤d2≤0.5 mm and a cylindrical height of L2, wherein 0.05 mm≤L2≤1.25 mm; a guide die having an optical fiber exit, the guide die disposed adjacent the cone-only coating die such that a wetted length (L5) between the optical fiber exit of the guide die and the entrance of the cone-only coating die is from 1 mm to 5 mm; and a holder for holding the cone-only coating die and the guide die in a fixed relationship defining a coating chamber between the guide die and the cone-only coating die, the coating chamber having an inner radius L6 from the optical fiber axis to an inner wall of the holder that is from 3 mm to 10 mm.

公开(公告)号：US20210087107A1

公开(公告)日：2021-03-25

申请号：US17112166

申请日：2020-12-04

Applicant: Corning Incorporated

Inventor： Sumitava De ,  Robert Clark Moore ,  Douglas Gregg Neilson ,  Pushkar Tandon

IPC: C03C25/105 ,  C03C25/18

Abstract: An optical fiber coating apparatus that provides increased gyre stability and reduced gyre strength, thereby providing a more reliable coating application process during fiber drawing includes a cone-only coating die having a conical entrance portion with a tapered wall angled at a half angle α, wherein 2°≤α≤25°, and a cone height L1 less than 2.2 mm, and a cylindrical portion having an inner diameter of d2, wherein 0.1 mm≤d2≤0.5 mm and a cylindrical height of L2, wherein 0.05 mm≤L2≤1.25 mm; a guide die having an optical fiber exit, the guide die disposed adjacent the cone-only coating die such that a wetted length (L5) between the optical fiber exit of the guide die and the entrance of the cone-only coating die is from 1 mm to 5 mm; and a holder for holding the cone-only coating die and the guide die in a fixed relationship defining a coating chamber between the guide die and the cone-only coating die, the coating chamber having an inner radius L6 from the optical fiber axis to an inner wall of the holder that is from 3 mm to 10 mm.

公开(公告)号：US20180208504A1

公开(公告)日：2018-07-26

申请号：US15868029

申请日：2018-01-11

Applicant: Corning Incorporated

Inventor： Sumitava De ,  Robert Clark Moore ,  Douglas Gregg Neilson ,  Pushkar Tandon

IPC: C03C25/105 ,  C03C25/18

CPC classification number: C03C25/105 ,  C03C25/18

Abstract: An optical fiber coating apparatus that provides increased gyre stability and reduced gyre strength, thereby providing a more reliable coating application process during fiber drawing includes a cone-only coating die having a conical entrance portion with a tapered wall angled at a half angle α, wherein 2°≤α≤25°, and a cone height L1 less than 2.2 mm, and a cylindrical portion having an inner diameter of d2, wherein 0.1 mm≤d2≤0.5 mm and a cylindrical height of L2, wherein 0.05 mm≤L2≤1.25 mm; a guide die having an optical fiber exit, the guide die disposed adjacent the cone-only coating die such that a wetted length (L5) between the optical fiber exit of the guide die and the entrance of the cone-only coating die is from 1 mm to 5 mm; and a holder for holding the cone-only coating die and the guide die in a fixed relationship defining a coating chamber between the guide die and the cone-only coating die, the coating chamber having an inner radius L6 from the optical fiber axis to an inner wall of the holder that is from 3 mm to 10 mm.