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公开(公告)号：US20210356661A1
公开(公告)日：2021-11-18
申请号：US17316292
申请日：2021-05-10
Applicant: CORNING INCORPORATED
Inventor： Kevin Wallace Bennett , Scott Robertson Bickham , Pushkar Tandon , Ruchi Sarda Tandon , Bin Yang
Abstract: A disclosed multimode optical fiber comprises a core and a cladding surrounding the core. The core has an outer radius r1 in between 20 μm and 30 μm. The cladding includes a first outer cladding region having an outer radius r4a and a second outer cladding region having an outer radius r4b less than or equal to 45 μm. The second outer cladding region comprises silica-based glass doped with titania. The optical fiber further includes a primary coating with an outer radius r5 less than or equal to 80 μm, and a thickness (r5−r4) less than or equal to 30 μm. The optical fiber further includes a secondary coating with an outer radius r6 less than or equal to 100 μm. The secondary coating has a thickness (r6−r5) less than or equal to 30 μm, and a normalized puncture load greater than 3.6×10−3 g/micron2.
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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 %.
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153.发明授权公开(公告)号：US11148089B2
公开(公告)日：2021-10-19
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
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.
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公开(公告)号：US20210294029A1
公开(公告)日：2021-09-23
申请号：US17184909
申请日：2021-02-25
Applicant: CORNING INCORPORATED
Abstract: An optical fiber is provided that includes a core region and a cladding region. The core region is formed of silica glass doped with chlorine and/or an alkali metal. The cladding region surrounds the core region and includes an inner cladding directly adjacent to the core region, an outer cladding surrounding the inner cladding, and a trench region disposed between the inner cladding and the outer cladding in a radial direction. The trench region has a volume of about 30% Δ-micron2 or greater. Additionally, the optical fiber has an effective area at 1550 nm of about 100 micron2 or less.
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公开(公告)号：US11125938B2
公开(公告)日：2021-09-21
申请号：US16741993
申请日：2020-01-14
Applicant: Corning Incorporated
Inventor： Dana Craig Bookbinder , Ming-Jun Li , Snigdharaj Kumar Mishra , Pushkar Tandon
Abstract: An optical fiber includes (i) a chlorine doped silica based core having a core alpha (Coreα)≥4, a radius r1, and a maximum refractive index delta Δ1max % and (ii) a cladding surrounding the core. The cladding surrounding the core includes a) a first inner cladding region adjacent to and in contact with the core and having a refractive index delta Δ2, a radius r2, and a minimum refractive index delta Δ2min such that Δ2min
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Patent Agency Ranking
公开(公告)号：US11067744B2
公开(公告)日：2021-07-20
申请号：US16193919
申请日：2018-11-16
Applicant: Corning Incorporated
Inventor： Scott Robertson Bickham , Dana Craig Bookbinder , Ming-Jun Li , Snigdharaj Kumar Mishra , Pushkar Tandon
Abstract: A single mode optical fiber, comprising: (i) a silica based core having a step refractive index profile with an alpha of greater than 10, a relative refractive index Δ1MAX, and an outer radius r1, wherein 6.25 microns>r1≥4.75 microns, the core further 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
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公开(公告)号：US20210181408A1
公开(公告)日：2021-06-17
申请号：US17112084
申请日：2020-12-04
Applicant: CORNING INCORPORATED
Inventor： Scott Robertson Bickham , Ming-Jun Li , Snigdharaj Kumar Mishra , Pushkar Tandon
Abstract: A multicore optical fiber includes a first core, a second core, and a common cladding. The first core includes silica and greater than 3 wt % chlorine, a first core centerline, a relative refractive index Δ1MAX, and an outer radius r1. The second core includes silica and greater than 3 wt % chlorine, a second core centerline, a relative refractive index Δ2MAX, and an outer radius r2. A spacing between the first core centerline and the second core centerline is at least 28 micrometers and a crosstalk between the first core and the second core is ≤−30 dB, as measured for a 100 km length of the multicore optical fiber operating at a wavelength of 1550 nm.
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公开(公告)号：US20210154612A1
公开(公告)日：2021-05-27
申请号：US17162583
申请日：2021-01-29
Applicant: CORNING INCORPORATED
Inventor： Douglas Munroe Beall , Dana Craig Bookbinder , Pushkar Tandon
Abstract: A honeycomb body having intersecting porous walls which includes first through fourth cells, wherein the cells extend from inlet to outlet face and are plugged to define a repeating structural unit with three inlets and one outlet channel. Repeating structural unit includes a first channel including length L1, width W2, and area A1, a second channel including length L2, the width W2, and area A2, a third channel including the length L1, width W1, and area A3, and a fourth channel including the length L2, the width W1, and A4, wherein the first through third channels are inlets and the fourth channel is a rectangular outlet and at least one of W1≥W2 and L1≠L2, i.e. W1≥W2, or L1≠L2, or W1≥W2 and L1≠L2. Repeating structural unit has a quadrilateral outer perimeter. Particulate filters including the honeycomb body, honeycomb extrusion dies, and methods of manufacturing the honeycomb body are provided.
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公开(公告)号：US10940421B2
公开(公告)日：2021-03-09
申请号：US16481254
申请日：2018-01-31
Applicant: Corning Incorporated
Inventor： Douglas Munroe Beall , Dana Craig Bookbinder , Pushkar Tandon
Abstract: A honeycomb body having intersecting porous walls which includes first through fourth cells, wherein the cells extend from inlet to outlet face and are plugged to define a repeating structural unit with three inlets and one outlet channel. Repeating structural unit includes a first channel including length L1, width W2, and area A1, a second channel including length L2, the width W2, and area A2, a third channel including the length L1, width W1, and area A3, and a fourth channel including the length L2, the width W1, and A4, wherein the first through third channels are inlets and the fourth channel is a rectangular outlet and at least one of W1>W2 and L1≠L2, i.e. W1>W2, or L1≠L2, or W1>W2 and L1≠L2. Repeating structural unit has a quadrilateral outer perimeter. Particulate filters including the honeycomb body, honeycomb extrusion dies, and methods of manufacturing the honeycomb body are provided.
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公开(公告)号：US20200088935A1
公开(公告)日：2020-03-19
申请号：US16561394
申请日：2019-09-05
Applicant: CORNING INCORPORATED
Inventor： Dana Craig Bookbinder , Ming-Jun Li , Pushkar Tandon
Abstract: The wideband multimode co-doped optical fiber has a silica core co-doped with GeO2 and Al2O3. The GeO2 concentration is maximum at the fiber centerline and monotonically decreases radially out to the core radius. The Al2O3 concentration is minimum at the centerline and monotonically increases radially out to maximum concentration at the core radius. The cladding has an inner cladding region of relative refractive index Δ2, an intermediate cladding region having a relative refractive index Δ3, and an outer cladding region having a relative refractive index Δ4, wherein Δ3
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