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公开(公告)号:US20140241684A1
公开(公告)日:2014-08-28
申请号:US13803578
申请日:2013-03-14
Applicant: Corning Incorporated
Inventor: Dana Craig Bookbinder , Rostislav Radiyevich Khrapko , Ming-Jun Li , Pushkar Tandon
IPC: G02B6/028
CPC classification number: G02B6/0281 , G02B6/02014 , G02B6/02019 , G02B6/0288
Abstract: An optical fiber is provided that includes a fiber configured to transmit optical data in a plurality of modes or in a single mode; a core region in the fiber that comprises fluorine-doped silica; and a cladding in the fiber that surrounds the core region and that comprises fluorine-doped silica. The core region has a graded refractive index profile with an alpha of about 0.5 to 5. The core of the fiber may be set with a radius of approximately 6 to 50 microns. The cladding may also comprise one or a plurality of layers, including trench or moat regions of a relatively lower refractive index. Still further, an inner cladding may be doped with fluorine at a concentration greater than that in the core region. An outer cladding can comprise silica with fluorine at a concentration below or equal to that in the inner cladding.
Abstract translation: 提供了一种光纤,其包括被配置为以多种模式或单个模式传输光学数据的光纤; 纤维中的核心区域,其包含氟掺杂二氧化硅; 以及在纤维中围绕芯区域并且包括掺氟二氧化硅的包层。 核心区域具有约0.5至5的α的渐变折射率分布。纤维的芯可以设置为约6至50微米的半径。 包层还可以包括一个或多个层,包括相对较低折射率的沟槽或护环区域。 此外,内包层可以以比核心区域中的浓度更大的浓度掺杂氟。 外包层可以包含浓度低于或等于内包层中的氟的二氧化硅。
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公开(公告)号:US20250128978A1
公开(公告)日:2025-04-24
申请号:US18917038
申请日:2024-10-16
Applicant: CORNING INCORPORATED
Inventor: Scott Robertson Bickham , Pushkar Tandon
IPC: C03B37/027 , C03B37/03
Abstract: Methods, systems, and device implementing slow cooling of reduced cladding diameter optical fibers are described. An optical fiber manufacturing system may draw optical fibers based on heating and extruding, via a draw furnace, optically transmissive material. The optical fiber manufacturing system may include a cooling device positioned after the draw furnace and configured to cool the optical fibers. Cooling the optical fibers with the cooling device may include applying one or more gases with low thermal conductivity to the optical fibers. Applying the one or more gases to the optical fibers may reduce a rate at which the optical fibers are cooled. For example, the cooling device may be configured to transition the optical fibers from a relatively pliable state associated with exiting the furnace to a relatively hardened state at a relatively slow rate. The optical fibers may have a cladding diameter less than or equal to 115 μm.
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公开(公告)号:US12214524B2
公开(公告)日:2025-02-04
申请号:US18300466
申请日:2023-04-14
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:US12105322B2
公开(公告)日:2024-10-01
申请号:US18379476
申请日:2023-10-12
Applicant: CORNING INCORPORATED
CPC classification number: G02B6/036 , G02B6/02009 , G02B6/02295
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:US20240255694A1
公开(公告)日:2024-08-01
申请号:US18411175
申请日:2024-01-12
Applicant: CORNING INCORPORATED
Inventor: Scott Robertson Bickham , Martin Hempstead , Snigdharaj Kumar Mishra , Stephen Quenton Smith , Pushkar Tandon
CPC classification number: G02B6/0281 , G02B6/02009
Abstract: An optical fiber having a silica-based core region with an outer radius r1 from about 4.0 microns to about 4.6 microns and a core volume from about 4.5% Δ-micron2 to about 5.5% Δ-micron2. The optical fiber further includes a depressed-index cladding region and an outer cladding region. The depressed-index cladding region having an inner radius r2 such that r1/r2 is greater than about 0.4 and less than about 0.6 and a trench volume between about −50% Δ-micron2s and about −20% Δ-micron2. The optical fiber has a mode field diameter at 1310 nm from about 8.8 microns to about 9.4 microns, a 2 m cable cutoff from about 1120 nm to about 1260 nm, a bending loss at 1310 nm, as determined by the mandrel wrap test using a 15 mm diameter mandrel, of less than 1.0 dB/turn, and a zero dispersion wavelength between 1300 nm and 1324 nm.
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公开(公告)号:US20240254034A1
公开(公告)日:2024-08-01
申请号:US18417324
申请日:2024-01-19
Applicant: CORNING INCORPORATED
Inventor: Leon Devone, JR. , Matthew Ryan Drake , Rostislav Radiyevich Khrapko , Pushkar Tandon , Matthew Artus Tuggle
IPC: C03C13/04 , C03B37/027 , C03C3/06
CPC classification number: C03C13/046 , C03B37/02718 , C03C3/06 , C03C2201/11 , C03C2201/50
Abstract: A method of making a multicore optical fiber preform, the method including consolidating a preform assembly to form the multicore optical fiber preform, the preform assembly including a plurality of core canes such that each core cane is disposed within an axial hole of a sleeve, each core cane including a core section of alkali doped silica glass such that the silica glass has a maximum alkali concentration between about 0.10 wt. % and about 10 wt. %, the core section of each core cane being encased by the sleeve along a height of the core cane and by covers disposed at first and second axial ends of the core section, and the covers including silica glass having a chlorine concentration of about 0.05 wt. % or less.
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公开(公告)号:US11982833B2
公开(公告)日:2024-05-14
申请号:US17702896
申请日:2022-03-24
Applicant: CORNING INCORPORATED
Inventor: Pushkar Tandon , Sergey Yurevich Ten
CPC classification number: G02B6/02261 , G02B6/028 , G02B6/4457
Abstract: In some embodiments, an optical fiber transmission link, includes a length of dispersion compensating fiber (DCF), the dispersion compensating fiber coupled to a length of single-mode fiber (SMF) having a zero dispersion wavelength of 1300 nm to 1324 nm; wherein the optical fiber transmission link comprising the dispersion compensating fiber coupled to the single-mode fiber and operating at wavelengths between 1265 nm and 1375 nm increases maximum link lengths of the optical fiber transmission link by more than 60% as compared to the link length of the optical fiber transmission link with the single-mode fiber only; and wherein the maximum link length is calculated from the maximum allowed positive and negative accumulated dispersion at wavelengths between 1265 nm and 1375 nm.
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公开(公告)号:US20240069271A1
公开(公告)日:2024-02-29
申请号:US18235496
申请日:2023-08-18
Applicant: CORNING INCORPORATED
Inventor: Pushkar Tandon , Aramais Robert Zakharian
CPC classification number: G02B6/02042 , G02B6/02019 , G02B6/0281 , G02B6/03622
Abstract: An uncoupled-core multicore optical fiber is disclosed, the fiber including at least two core portions, each core portion including a core and a depressed-index cladding. The core having a radius r1 and a relative refractive index Δ1. The depressed-index cladding having a radius r2 and a relative refractive index Δ2, the depressed-index cladding surrounding and directly contacting the core, a volume V2 of the depressed-index cladding being about 15.0% Δ-micron2 to about 37.0% Δ-micron2. The fiber further includes a common cladding having a radius r3 and a relative refractive index Δ3 such that Δ2
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公开(公告)号:US20240034667A1
公开(公告)日:2024-02-01
申请号:US18377484
申请日:2023-10-06
Applicant: CORNING INCORPORATED
Inventor: Steven Bruce Dawes , Douglas Hull Jennings , Pushkar Tandon
IPC: C03C3/06 , C03B19/14 , C03B37/014 , C03B19/06 , C03B25/02 , C03B37/012 , C03B37/018 , G02B6/036
CPC classification number: C03C3/06 , C03B19/1453 , C03B19/1461 , C03B37/01453 , C03B37/01446 , C03B19/066 , C03B25/02 , C03B37/01282 , C03B37/014 , C03B37/01853 , G02B6/036 , C03B2201/12 , C03B2201/42 , C03B2201/20 , C03B2201/075
Abstract: A method of forming an optical element is provided. The method includes producing silica-based soot particles using chemical vapor deposition, the silica-based soot particles having an average particle size of between about 0.05 μm and about 0.25 μm. The method also includes forming a soot compact from the silica-based soot particles and doping the soot compact with a halogen in a closed system by contacting the silica-based soot compact with a halogen-containing gas in the closed system at a temperature of less than about 1200° C.
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公开(公告)号:US20230314697A1
公开(公告)日:2023-10-05
申请号:US18201368
申请日:2023-05-24
Applicant: CORNING INCORPORATED
Inventor: Scott Robertson Bickham , Dana Craig Bookbinder , Ming-Jun Li , Snigdharaj Kumar Mishra , Pushkar Tandon
IPC: G02B6/02
CPC classification number: G02B6/02042 , G02B6/02019
Abstract: A coupled-core multicore optical fiber has a plurality of cores that are doped with alkali metals or chlorine to achieve low attenuation and a large effective area. The cores may be embedded in a common cladding region that may be fluorine doped. The cores may also be doped with chlorine, either with the alkali metals described above or without the alkali metals.
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