公开(公告)号：US20200087195A1

公开(公告)日：2020-03-19

申请号：US16568856

申请日：2019-09-12

Applicant: CORNING INCORPORATED

Inventor： Steven Bruce Dawes ,  Pushkar Tandon

IPC: C03B37/018 ,  C03B37/027

Abstract: A method of forming an optical fiber preform includes: flowing a silicon halide and an oxidizer inside of a substrate tube, wherein a molar ratio of the silicon halide to the oxidizer is from about 1.5 to about 5.0; applying a plasma to the substrate tube to heat the substrate tube to a temperature of from about 1000° C. to about 1700° C.; and depositing silica glass comprising a halogen inside the substrate tube.

公开(公告)号：US10564349B2

公开(公告)日：2020-02-18

申请号：US16193866

申请日：2018-11-16

Applicant: Corning Incorporated

Inventor： Scott Robertson Bickham ,  Dana Craig Bookbinder ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Pushkar Tandon

IPC: G02B6/028 ,  G02B6/036 ,  G02B6/02

Abstract: A single mode optical fiber, comprising: (i) a silica based core having a graded refractive index profile with an alpha of less than 5, a relative refractive index Δ1max, and an outer radius r1, wherein 10 microns>r1≥6.5 microns, the core comprising Cl, Ge, or a combination thereof; (ii) a first cladding region in contact with and surrounding the core, the first cladding region having a relative refractive index Δ2min, an inner radius r1, and an outer radius r2, wherein r2 than 9 microns, a zero dispersion wavelength

公开(公告)号：US20190243063A1

公开(公告)日：2019-08-08

申请号：US16260515

申请日：2019-01-29

Applicant: Corning Incorporated

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

IPC: G02B6/028 ,  G02B6/036

CPC classification number: G02B6/0281 ,  G02B6/02266 ,  G02B6/03627 ,  G02B6/0365

Abstract: A single mode optical fiber, comprising: A single mode optical fiber, comprising: (i) a silica based core having a refractive index profile with an alpha (α) between 1.8 and 200, a relative refractive index Δ1max %, and an outer radius r1, wherein 7 microns >r1≥4.5 microns, the core further comprising silica doped with chlorine, wherein the maximum chlorine concentration in the core is greater than 0.5 wt %; and wherein 1.40 Δ4 %.

公开(公告)号：US20190162097A1

公开(公告)日：2019-05-30

申请号：US16316906

申请日：2017-07-13

Applicant: Corning Incorporated

Inventor： Rajesh Bhargava ,  Dana Craig Bookbinder ,  Curtis Richard Cowles ,  Jacob George ,  Jason Thomas Harris ,  Seth Thomas Nickerson ,  Pushkar Tandon

IPC: F01N3/28 ,  F01N13/18

Abstract: Exhaust gas treatment articles and methods of manufacturing the same are disclosed herein. An exhaust gas treatment article includes a porous ceramic honeycomb body with multiple channel walls defining cell channels that extend in an axial direction and an outer peripheral surface that extends in the axial direction. The exhaust gas treatment article further includes a metal layer that surrounds the porous ceramic honeycomb body and that is in direct contact with at least a portion of the outer peripheral surface of the porous ceramic honeycomb body. The metal layer includes a joint. The exhaust gas treatment article includes a shim that is located under the joint and that is in direct contact with at least a portion of the outer peripheral surface of the porous ceramic honeycomb body.

公开(公告)号：US20190126186A1

公开(公告)日：2019-05-02

申请号：US16095596

申请日：2017-04-24

Applicant: Corning Incorporated

Inventor： Douglas Munroe Beall ,  Suhao He ,  Achim Karl-Erich Heibel ,  Kenneth Richard Miller ,  Pushkar Tandon ,  David John Thompson

IPC: B01D46/24 ,  B28B3/26 ,  F01N3/022

Abstract: A particulate filter having a honeycomb structure of a matrix of interconnected porous walls including inlet cells and outlet cells defining a plurality of inlet channels and outlet channels, respectively, wherein at least a portion of the outlet cells are larger than any of the inlet cells, and a cross-sectional shape of at least some of the outlet channels is rectangular. Honeycomb extrusion dies, honeycomb bodies, honeycomb structures, and methods of manufacture are described, as are other aspects.

公开(公告)号：US20190119143A1

公开(公告)日：2019-04-25

申请号：US16165633

申请日：2018-10-19

Applicant: Corning Incorporated

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

IPC: C03B37/014 ,  C03B37/018 ,  C03B37/012 ,  C03B37/027 ,  G02B6/02

Abstract: Preparation of halogen-doped silica is described. The preparation includes doping silica with high halogen concentration, sintering halogen-doped silica to a closed-pore state, and subjecting the closed-pore silica body to a thermal treatment process and/or a pressure treatment process. The temperature of thermal treatment is sufficiently high to facilitate reaction of unreacted doping precursor trapped in voids or interstices of the glass structure, but is below temperatures conducive to foaming. Core canes or fibers drawn from halogen-doped silica subjected to the thermal treatment and/or pressure treatment show improved optical quality and possess fewer defects. The thermal treatment and/or pressure treatment is particularly advantageous when used for silica doped with high concentrations of halogen.

公开(公告)号：US10221089B2

公开(公告)日：2019-03-05

申请号：US15248060

申请日：2016-08-26

Applicant: Corning Incorporated

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

IPC: C03B37/029 ,  C03B37/027

Abstract: An optical fiber with low fictive temperature along with a system and method for making the optical fiber are provided. The system includes a reheating stage that heats the fiber along the process pathway to a temperature sufficient to lower the fictive temperature of the fiber by relaxing the glass structure and/or driving the glass toward a more nearly equilibrium state. The fiber is drawn from a preform, conveyed along a process pathway, cooled and subsequently reheated to increase the time of exposure of the fiber to temperatures conducive to lowering the fictive temperature of the fiber. The process pathway may include multiple reheating stages as well as one or more fiber-turning devices.

公开(公告)号：US10215915B2

公开(公告)日：2019-02-26

申请号：US15714122

申请日：2017-09-25

Applicant: Corning Incorporated

Inventor： Dana Craig Bookbinder ,  Steven Bruce Dawes ,  Ming-Jun Li ,  Pushkar Tandon

IPC: G02B6/28 ,  C03B37/014 ,  G02B6/028 ,  G02B6/02 ,  G02B6/036 ,  C03C3/06

Abstract: According to embodiments, an optical fiber may include a core portion comprising an outer radius rC and a maximum relative refractive index ΔCmax. A cladding may surround the core portion and include a low-index trench and an outer cladding. The low index trench may surround the core portion and includes an outer radius rT and relative refractive index ΔT. The outer cladding may surround and be in direct contact with the low-index trench. The outer cladding may be formed from silica-based glass comprising greater than 1.0 wt. % bromine and has a relative refractive index ΔOC, wherein ΔCmax>ΔOC>ΔT. The optical fiber may have a cable cutoff of less than or equal to 1530 nm. An attenuation of the optical fiber may be less than or equal to 0.185 dB/km at a wavelength of 1550 nm.

公开(公告)号：US10215914B2

公开(公告)日：2019-02-26

申请号：US14919034

申请日：2015-10-21

Applicant: Corning Incorporated

Inventor： Stephan Lvovich Logunov ,  Pushkar Tandon

IPC: G02B6/02 ,  F21V8/00 ,  G02B6/036

Abstract: A light-diffusing optical fiber having nanostructured inner and outer core regions is disclosed. The nanostructured inner core region is defined by a first configuration of voids that defines a first amount of light scattering. The outer core region is defined by a second configuration of voids that defines a second amount of light scattering that is different from the first amount of light scattering. A cladding surrounds the nanostructured core. Light scattered out of the inner core region scatters from the outer core region and then out of the cladding as scattered light. Selective bending of the light-diffusing optical fiber is used to define a bending configuration that allows for tailoring the intensity distribution of the scattered light emitted from the fiber as a function of the length of the fiber.

公开(公告)号：US10183885B2

公开(公告)日：2019-01-22

申请号：US15496393

申请日：2017-04-25

Applicant: Corning Incorporated

Inventor： Dana Craig Bookbinder ,  Stephan Lvovich Logunov ,  Sasha Marjanovic ,  Albert Roth Nieber ,  Garrett Andrew Piech ,  Kamjula Pattabhirami Reddy ,  Pushkar Tandon ,  Sergio Tsuda ,  Natesan Venkataraman ,  Robert Stephen Wagner

IPC: C03B33/02 ,  C03B25/087 ,  C03B33/07 ,  B23K26/53 ,  B23K26/0622 ,  B23K26/402 ,  C03B17/06 ,  C03B33/09 ,  B23K26/359 ,  B23K103/00 ,  B23K103/16

Abstract: The present disclosure relates to a process for cutting and separating arbitrary shapes of thin substrates of transparent materials, particularly tailored composite fusion drawn glass sheets, and the disclosure also relates to a glass article prepared by the method. The developed laser method can be tailored for manual separation of the parts from the panel or full laser separation by thermally stressing the desired profile. The self-separation method involves the utilization of an ultra-short pulse laser that can be followed by a CO2 laser (coupled with high pressure air flow) for fully automated separation.