公开(公告)号：US10308544B2

公开(公告)日：2019-06-04

申请号：US15271817

申请日：2016-09-21

Applicant: Corning Incorporated

Inventor： Stephen Mitchell Carlton ,  John Michael Jewell ,  Nikolaos Pantelis Kladias ,  Kochuparambil Deenamma Vargheese ,  Chunfeng Zhou

IPC: C03B37/025 ,  C03B37/029

Abstract: A method of producing an optical fiber is provided that includes the steps of flowing a first gas into an optical fiber draw furnace. The first gas is passed through a heated section configured to contain and heat a glass source from which the optical fiber is drawn, passing the first gas through a muffle which defines a capture chamber. A portion of the first gas is removed through at least one reclaim port operatively coupled to the capture chamber. A second gas flows into a gas screen at a rate configured to substantially recover a pressure drop associated with removing the portion of the first gas.

公开(公告)号：US20170101336A1

公开(公告)日：2017-04-13

申请号：US15271817

申请日：2016-09-21

Applicant: Corning Incorporated

Inventor： Stephen Mitchell Carlton ,  John Michael Jewell ,  Nikolaos Pantelis Kladias ,  Kochuparambil Deenamma Vargheese ,  Chunfeng Zhou

IPC: C03B37/025 ,  C03B37/029

CPC classification number: C03B37/0253 ,  C03B37/029 ,  C03B2205/42 ,  C03B2205/61 ,  C03B2205/83 ,  C03B2205/91 ,  Y02P40/57

Abstract: A method of producing an optical fiber is provided that includes the steps of flowing a first gas into an optical fiber draw furnace. The first gas is passed through a heated section configured to contain and heat a glass source from which the optical fiber is drawn, passing the first gas through a muffle which defines a capture chamber. A portion of the first gas is removed through at least one reclaim port operatively coupled to the capture chamber. A second gas flows into a gas screen at a rate configured to substantially recover a pressure drop associated with removing the portion of the first gas.

公开(公告)号：US20220106221A1

公开(公告)日：2022-04-07

申请号：US17490407

申请日：2021-09-30

Applicant: CORNING INCORPORATED

Inventor： John Michael Jewell ,  Hoon Kim ,  Michael Thomas Prezioso

IPC: C03B37/029 ,  C03B37/03 ,  C01B32/21 ,  C04B35/56 ,  C04B35/622

Abstract: A muffle for an optical fiber draw furnace. The muffle including an inner surface and an outer surface, the inner surface forming an inner cavity. A protective coating is disposed on the inner surface, the protective coating having a melting point of about 1850° C. or greater. Furthermore, an absolute difference between a coefficient of thermal expansion of the protective coating and a coefficient of thermal expansion of a material of the muffle is 2.0 ppm/° C. or less over a temperature range from 25° C. to 1000° C.

公开(公告)号：US20220002182A1

公开(公告)日：2022-01-06

申请号：US17470499

申请日：2021-09-09

Applicant: Corning Incorporated

Inventor： Erling Richard Anderson ,  Tammy Michelle Hoffmann ,  John Michael Jewell ,  Nikolaos Pantelis Kladias ,  Robert Clark Moore

IPC: C03B37/029

Abstract: A furnace system includes a muffle defining a furnace cavity. A lower heater is coupled to the muffle and is configured to create a hot zone within the furnace cavity having a temperature of about 1900° C. or greater. An upper muffle extension is positioned above the muffle and defines a handle cavity. A downfeed handle is positioned within the handle cavity such that a gap is defined between an outer surface of the downfeed handle and an inner surface of the upper muffle extension. An upper heater is thermally coupled to the upper muffle extension and configured to heat the gap. A gas screen is positioned in the upper muffle extension and is configured to inject a process gas into the handle cavity.

公开(公告)号：US20180111871A1

公开(公告)日：2018-04-26

申请号：US15787956

申请日：2017-10-19

Applicant: Corning Incorporated

Inventor： John Michael Jewell ,  Nikolaos Pantelis Kladias ,  Robert Walter Nason ,  Bruce Warren Reding ,  Edward Barry Richter ,  Daniel Paul Veber ,  Chunfeng Zhou

IPC: C03B37/029 ,  C03B37/025

Abstract: An optical fiber production system is provided which includes a slow-cooling device and a purge device positioned above the slow-cooling device. The purge device includes a tube defining an inlet. An optical fiber extends through the slow-cooling device and the purge device. The purge device is configured to inject a purge gas through the inlet and against the optical fiber.

公开(公告)号：US11952305B2

公开(公告)日：2024-04-09

申请号：US17490720

申请日：2021-09-30

Applicant: CORNING INCORPORATED

Inventor： Ravindra Kumar Akarapu ,  Joel Patrick Carberry ,  David Alan Deneka ,  Steven Akin Dunwoody ,  Kenneth Edward Hrdina ,  John Michael Jewell ,  Yuanjie Jiang ,  Nikolaos Pantelis Kladias ,  Ming-Jun Li ,  Barada Kanta Nayak ,  Dale Robert Powers ,  Chunfeng Zhou ,  Vincent Matteo Tagliamonti ,  Christopher Scott Thomas

IPC: C03B37/027 ,  C03B37/029

CPC classification number: C03B37/02727 ,  C03B37/029 ,  C03B2205/55 ,  C03B2205/56

Abstract: In some embodiments, a method for processing an optical fiber includes: drawing an optical fiber through a draw furnace, conveying the optical fiber through a flame reheating device downstream from the draw furnace, wherein the flame reheating device comprises one or more burners each comprising: a body having a top surface and an opposing bottom surface, an opening within the body extending from the top surface through the body to the bottom surface, wherein the optical fiber passes through the opening, and one or more gas outlets within the body; and igniting a flammable gas provided by the one or more gas outlets to form a flame encircling the optical fiber passing through the opening, wherein the flame heats the optical fiber by at least 100 degrees Celsius at a heating rate exceeding 10,000 degrees Celsius/second.

公开(公告)号：US11820696B2

公开(公告)日：2023-11-21

申请号：US17978392

申请日：2022-11-01

Applicant: CORNING INCORPORATED

Inventor： Tammy Michelle Hoffmann ,  John Michael Jewell ,  Nikolaos Pantelis Kladias

IPC: C03B37/029 ,  C03B37/03

CPC classification number: C03B37/029 ,  C03B37/032 ,  C03B2205/62 ,  C03B2205/74

Abstract: An optical fiber draw system and method of operating thereof. The method includes positioning a downfeed handle for supporting an optical fiber preform within a furnace such that the downfeed handle is movable within the furnace. The method further includes operating one or more heating elements to thermally heat at least a portion of an upper muffle extension disposed within the furnace, the one or more heating elements being moveable with the downfeed handle.

公开(公告)号：US11286195B2

公开(公告)日：2022-03-29

申请号：US16387876

申请日：2019-04-18

Applicant: Corning Incorporated

Inventor： Stephen Mitchell Carlton ,  John Michael Jewell ,  Nikolaos Pantelis Kladias ,  Kochuparambil Deenamma Vargheese ,  Chunfeng Zhou

IPC: C03B37/029 ,  C03B37/025

Abstract: A method of producing an optical fiber is provided that includes the steps of flowing a first gas into an optical fiber draw furnace. The first gas is passed through a heated section configured to contain and heat a glass source from which the optical fiber is drawn, passing the first gas through a muffle which defines a capture chamber. A portion of the first gas is removed through at least one reclaim port operatively coupled to the capture chamber. A second gas flows into a gas screen at a rate configured to substantially recover a pressure drop associated with removing the portion of the first gas.

公开(公告)号：US11242278B2

公开(公告)日：2022-02-08

申请号：US16298605

申请日：2019-03-11

Applicant: Corning Incorporated

Inventor： Erling Richard Anderson ,  John Michael Jewell ,  Robert Walter Nason ,  Elias Panides ,  Xiaoyong Wang ,  Leo Young Zheng ,  Chunfeng Zhou

IPC: C03B37/029 ,  F27B5/10 ,  C03B37/083 ,  F27B5/14

Abstract: An optical fiber draw furnace muffle includes a body portion defining a substantially cylindrical cavity extending along a centerline axis of the muffle. A tapered portion has an interior surface which defines a first curved portion with a first radius of curvature and a second curved portion with a second radius of curvature. At least one of the first and second radii of curvature has a radius greater than a radius of the cylindrical cavity.

公开(公告)号：US20250034025A1

公开(公告)日：2025-01-30

申请号：US18775174

申请日：2024-07-17

Applicant: CORNING INCORPORATED

Inventor： Julian Lamar Dunn ,  John Michael Jewell

IPC: C03B37/029 ,  C03B37/025

Abstract: Methods, systems, and devices, implementing counter-directional gas injection for a furnace system are described. A furnace system may be configured to heat and draw optically transmissive material to form optical fibers. For example, the furnace system may include an insulated muffle coupled with a heater, where the muffle defines a diametrically consistent cavity in which the optically transmissive material is heated and drawn. The optically transmissive material may be drawn through the cavity in a direction associated with gravity. The furnace system may inject one or more inert gases into the cavity via an inlet port at a bottom portion of the muffle, and release the one or more inert gases from the cavity via an outlet port at a top portion of the muffle, such that the one or more inert gases flow in a direction counter to the drawing of the optically transmissive material.