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    LOW ATTENUATION OPTICAL FIBERS WITH AN F-GRADED INDEX CORE
    61.
    发明申请
    LOW ATTENUATION OPTICAL FIBERS WITH AN F-GRADED INDEX CORE 有权
    低衰减光纤光纤与F级灰度指数芯

    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。

    SLOW COOLING OF REDUCED CLADDING DIAMETER OPTICAL FIBERS
    62.
    发明申请
    SLOW COOLING OF REDUCED CLADDING DIAMETER OPTICAL FIBERS 有权

    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.

    SINGLE-MODE OPTICAL FIBERS WITH LOW CUTOFF WAVELENGTH AND LOW BEND LOSS
    65.
    发明公开
    SINGLE-MODE OPTICAL FIBERS WITH LOW CUTOFF WAVELENGTH AND LOW BEND LOSS 审中-公开

    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

    IPC: G02B6/028 ,  G02B6/02

    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.

    Dispersion compensation fiber and dispersion compensation module
    67.
    发明授权
    Dispersion compensation fiber and dispersion compensation module 有权

    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

    IPC: G02B6/02 ,  G02B6/028 ,  G02B6/44

    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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