公开(公告)号：US09574969B2

公开(公告)日：2017-02-21

申请号：US14696890

申请日：2015-04-27

Applicant: Corning Incorporated

Inventor： Kirk Patton Bumgarner ,  Aditya Kaimal ,  Michael Terry Murphy ,  Bruce Warren Reding

IPC: G01N3/08 ,  G01M11/08 ,  G01M11/00 ,  C03B37/03

CPC classification number: G01M11/088 ,  C03B37/03 ,  C03B37/032 ,  G01M11/30 ,  G01N3/08 ,  Y02P40/57

Abstract: In one embodiment, an apparatus for screen testing an optical fiber includes a fiber conveyance pathway, a capstan having an outer circumference and a fiber contact region extending around the outer circumference, the fiber contact region having a durometer hardness of less than or equal to about 40 Shore A, where the capstan is positioned adjacent to the fiber conveyance pathway such that when the optical fiber is directed over the fiber conveyance pathway, the optical fiber engages with the fiber contact region, and a pinch belt positioned adjacent to the fiber conveyance pathway such that the fiber conveyance pathway extends between the pinch belt and the fiber contact region, where the pinch belt is engageable with the fiber contact region such that, when the optical fiber is directed over the fiber conveyance pathway, the optical fiber is impinged between the pinch belt and the fiber contact region.

Abstract translation: 在一个实施例中，用于屏幕测试光纤的装置包括光纤传送路径，具有外周的绞盘和围绕外圆周延伸的纤维接触区域，所述纤维接触区域的硬度计硬度小于或等于约 40肖氏A，其中绞盘位于纤维传送路径附近，使得当光纤被引导到纤维传送路径上时，光纤与纤维接触区域接合，并且位于邻近纤维传送路径的夹带 使得纤维传送路径在夹持带和纤维接触区域之间延伸，其中夹带可与纤维接触区域接合，使得当光纤被引导到纤维传送路径上时，光纤撞击在 夹带和纤维接触区域。

公开(公告)号：US20230295031A1

公开(公告)日：2023-09-21

申请号：US18007951

申请日：2021-06-16

Applicant: Corning Incorporated

Inventor： Jeffrey Robert Amadon ,  Jean-Marc Martin Gerard Jouanno ,  Xinghua Li ,  Bruce Warren Reding ,  William Anthony Whedon ,  Rui Zhang ,  Peng Zhao

IPC: C03B17/06

CPC classification number: C03B17/067

Abstract: A method of manufacturing a glass ribbon can comprise flowing a glass-forming ribbon along a travel path. The glass-forming ribbon can comprise a first major surface and a second major surface opposite the first major surface. A thickness can be defined between the first major surface and the second major surface. The method can comprise heating the first major surface of the glass-forming ribbon at a target location of the travel path while the glass-forming ribbon is travelling along the travel path. The heating can increase a temperature of the glass-forming ribbon at the target location to a heating depth of about 250 micrometers or less from the first major surface. The method can comprise cooling the glass-forming ribbon into the glass ribbon. Prior to the heating, the glass-forming ribbon at the target location can comprise an average viscosity in a range from about 1,000 Pascal-seconds to about 1011 Pascal-seconds.

公开(公告)号：US11577985B2

公开(公告)日：2023-02-14

申请号：US17175000

申请日：2021-02-12

Applicant: CORNING INCORPORATED

Inventor： Bruce Warren Reding ,  Pushkar Tandon

IPC: C03B37/027

Abstract: A system for processing an optical fiber includes: a draw furnace, the draw furnace containing an optical fiber preform; a bare optical fiber drawn from the optical fiber preform, the bare optical fiber extending from the draw furnace along a process pathway; and a slow cooling device operatively coupled to and downstream from the draw furnace, the slow cooling device exposing the bare optical fiber to a slow cooling device process temperature in the range form 1000° C. to 1400° C., wherein the bare optical fiber passes through the slow cooling device at least two times.

公开(公告)号：US11097976B2

公开(公告)日：2021-08-24

申请号：US16418075

申请日：2019-05-21

Applicant: CORNING INCORPORATED

Inventor： Yacob Mesfin Argaw ,  Nikolaos Pantelis Kladias ,  Robert Clark Moore ,  Bruce Warren Reding ,  Chunfeng Zhou

IPC: C03B37/027

Abstract: A method of processing an optical fiber includes drawing the optical fiber from a heated glass source, reheating the optical fiber, and cooling the optical fiber under vacuum at a cooling rate less than the cooling rate of the optical fiber in air at 25° C. and 1 atm. Cooling the optical fiber under vacuum is conducted after reheating the optical fiber. Cooling the optical fiber under vacuum reduces the rate of heat transfer from the optical fiber, which may enable further relaxation of the glass and reduction in the fictive temperature of the optical fiber. A system for processing an optical fiber includes a furnace containing a fiber preform, a first positioner, a reheating device, and a treatment device downstream of the reheating device, the treatment device operable to cool the optical fiber under vacuum to reduce the rate of heat transfer from the optical fiber.

公开(公告)号：US20210253469A1

公开(公告)日：2021-08-19

申请号：US17175000

申请日：2021-02-12

Applicant: CORNING INCORPORATED

Inventor： Bruce Warren Reding ,  Pushkar Tandon

IPC: C03B37/027

Abstract: A system for processing an optical fiber includes: a draw furnace, said draw furnace containing an optical fiber preform; a bare optical fiber drawn from said optical fiber preform, said bare optical fiber extending from said draw furnace along a process pathway; and a slow cooling device operatively coupled to and downstream from said draw furnace, said slow cooling device exposing said bare optical fiber to a slow cooling device process temperature in the range from 1000° C. to 1400° C., wherein the bare optical fiber passes through the slow cooling device at least two times.

公开(公告)号：US10322963B2

公开(公告)日：2019-06-18

申请号：US14945848

申请日：2015-11-19

Applicant: Corning Incorporated

Inventor： Dana Craig Bookbinder ,  Ming-Jun Li ,  Bruce Warren Reding ,  Pushkar Tandon

IPC: C03B37/03 ,  C03B37/025 ,  C03B37/035 ,  C03B37/027

Abstract: An optical fiber with low attenuation is provided. The fiber is produced under conditions that reduce fictive temperature. Processing includes maintaining the fiber at temperatures at or near the glass transition temperature (Tg) for an extended period of time. For silica-based fibers, the preferred temperatures are temperatures between 1000° C. and 1700° C. The extended residence times are achieved in a continuous fiber manufacturing process by increasing the path length of the fiber through a processing region maintained at temperatures between 1000° C. and 1700° C. The increased path length is achieved by including one or more fluid bearing devices in the processing region. The extended residence time in the processing region allows the structure of the glass fiber to relax more completely and to more closely approach the equilibrium state. The more relaxed glass structure leads to a lower fictive temperature and provides fibers with lower attenuation.

公开(公告)号：US20190055153A1

公开(公告)日：2019-02-21

申请号：US16059168

申请日：2018-08-09

Applicant: Corning Incorporated

Inventor： Robert Clark Moore ,  Bruce Warren Reding

IPC: C03B37/03 ,  C03B37/027 ,  C03B37/029

Abstract: A fluid bearing for directing optical fibers during manufacturing is presented. The fluid bearing provides a flow of fluid to levitate and direct an optical fiber along a process pathway. The optical fiber is situated in a fiber slot and subjected to an upward force from fluid flowing from an inner radial position of the fiber slot past the optical fiber to an outer radial position of the fiber slot. The levitating force of fluid acting on the optical fiber is described by a convex force curve, according to which the upward levitating force on the optical fiber increases as the optical fiber moves deeper in the slot. Better stability in the positioning of the optical fiber in the fiber slot is achieved and contact of the optical fiber with solid surfaces of the fluid bearing is avoided. Various fluid bearing structures for achieving a convex force curve are described.

公开(公告)号：US20170131177A1

公开(公告)日：2017-05-11

申请号：US15402468

申请日：2017-01-10

Applicant: Corning Incorporated

Inventor： Kirk Patton Bumgarner ,  Aditya Kaimal ,  Michael Terry Murphy ,  Bruce Warren Reding

IPC: G01M11/08 ,  C03B37/03 ,  G01N3/08

CPC classification number: G01M11/088 ,  C03B37/03 ,  C03B37/032 ,  G01M11/30 ,  G01N3/08 ,  Y02P40/57

Abstract: In one embodiment, an apparatus for screen testing an optical fiber includes a fiber conveyance pathway, a capstan having an outer circumference and a fiber contact region extending around the outer circumference, the fiber contact region having a durometer hardness of less than or equal to about 40 Shore A, where the capstan is positioned adjacent to the fiber conveyance pathway such that when the optical fiber is directed over the fiber conveyance pathway, the optical fiber engages with the fiber contact region, and a pinch belt positioned adjacent to the fiber conveyance pathway such that the fiber conveyance pathway extends between the pinch belt and the fiber contact region, where the pinch belt is engagable with the fiber contact region such that, when the optical fiber is directed over the fiber conveyance pathway, the optical fiber is impinged between the pinch belt and the fiber contact region.

公开(公告)号：US20230234879A1

公开(公告)日：2023-07-27

申请号：US18099719

申请日：2023-01-20

Applicant: CORNING INCORPORATED

Inventor： Bruce Warren Reding ,  Pushkar Tandon

IPC: C03B37/027

CPC classification number: C03B37/02736 ,  C03B37/02718

Abstract: A system for processing an optical fiber includes: a draw furnace, said draw furnace containing an optical fiber preform; a bare optical fiber drawn from said optical fiber preform, said bare optical fiber extending from said draw furnace along a process pathway; and a slow cooling device operatively coupled to and downstream from said draw furnace, said slow cooling device exposing said bare optical fiber to a slow cooling device process temperature in the range from 1000° C. to 1400° C., wherein the bare optical fiber passes through the slow cooling device at least two times.

公开(公告)号：US20230132984A1

公开(公告)日：2023-05-04

申请号：US17974135

申请日：2022-10-26

Applicant: Corning Incorporated

Inventor： Nikolaos Pantelis Kladias ,  Ming-Jun Li ,  Bruce Warren Reding ,  Pushkar Tandon ,  Kevin Lee Wasson

IPC: C03B37/025 ,  C03B37/029

Abstract: Optical fiber draw production systems, pressure devices, and methods of fabrication of optical fiber are disclosed. In one embodiment, a method of forming an optical fiber includes heating a preform to draw the optical fiber through a draw furnace, and passing the optical fiber through a pressure device while the optical fiber is still forming, wherein a pressure within the pressure device is greater than an atmospheric pressure.