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    MODE-SELECTIVE OPTICAL FIBER COUPLERS
    71.
    发明公开
    MODE-SELECTIVE OPTICAL FIBER COUPLERS 审中-公开

    公开(公告)号：US20240159966A1

    公开(公告)日：2024-05-16

    申请号：US18382255

    申请日：2023-10-20

    Applicant: CORNING INCORPORATED

    Inventor： Sergey Anatol'evich Kuchinsky ,  Dmitri Vladislavovich Kuksenkov ,  Ming-Jun Li ,  Vladimir Nikolaevich Nazarov ,  Aramais Robert Zakharian

    IPC: G02B6/14 ,  G02B6/02

    CPC classification number: G02B6/14 ,  G02B6/02071 ,  G02B6/021

    Abstract: In embodiments, a mode selective optical fiber coupler may include a first propagation waveguide and a second propagation waveguide joined along a coupling length L. The first propagation waveguide and the second propagation waveguide may be tapered from an input face and an output face of the coupler to a midpoint of the coupler. An LP01 mode of an optical signal with a wavelength of 800-950 nm coupled into the first propagation waveguide propagates through the first propagation waveguide and is emitted from the first propagation waveguide. An LP01 loss of the coupler at the output face is less than 1.0 dB. An LP11 mode of the optical signal coupled into the first propagation waveguide is cross-coupled to the second propagation waveguide and is emitted from the second propagation waveguide. An LP11 loss of the coupler at the output face is less than 1.5 dB.

    Optical fiber for data centers
    73.
    发明授权
    Optical fiber for data centers 有权

    公开(公告)号：US11860408B2

    公开(公告)日：2024-01-02

    申请号：US17682379

    申请日：2022-02-28

    Applicant: CORNING INCORPORATED

    Inventor： Ming-Jun Li ,  Pushkar Tandon

    IPC: G02B6/036 ,  G02B6/02 ,  G02B6/028 ,  G02B6/44

    CPC classification number: G02B6/03627 ,  G02B6/02014 ,  G02B6/0281 ,  G02B6/0286 ,  G02B6/02266 ,  G02B6/0365 ,  G02B6/4403 ,  G02B6/448 ,  C03B2203/23 ,  C03B2203/26 ,  G02B6/03638

    Abstract: The disclosure provides optical fibers that exhibit low macrobend loss at 1550 nm at bend diameters between 10 mm and 40 mm. The relative refractive index profile of the fibers includes a trench cladding region with small depth, large width and a trench volume configured to minimize macrobend loss at large and small bend diameters. The optical fiber includes an outer cladding region that surrounds and is directly adjacent to the trench cladding region and an optional offset cladding region between the trench cladding region and the core region. In some embodiments, the trench cladding region has a relative refractive index that decreases monotonically from the inner radius to the outer radius. The monotonic decrease in relative refractive index may have a constant slope. The low macrobend loss at large and small diameters makes the optical fibers well suited for space-constrained deployment environments, such as data centers.

    Optical fiber with inverse triangular trench design
    75.
    发明授权
    Optical fiber with inverse triangular trench design 有权

    公开(公告)号：US11675125B2

    公开(公告)日：2023-06-13

    申请号：US17362101

    申请日：2021-06-29

    Applicant: CORNING INCORPORATED

    Inventor： Ming-Jun Li ,  Pushkar Tandon

    IPC: G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/44

    CPC classification number: G02B6/0286 ,  G02B6/02009 ,  G02B6/0281 ,  G02B6/0283 ,  G02B6/0365 ,  G02B6/03622 ,  G02B6/02347 ,  G02B6/4403

    Abstract: A single mode optical fiber is provided that includes a core region having an outer radius r1 and a maximum relative refractive index Δ1max. The single mode optical fiber further includes a cladding region surrounding the core region, the cladding region includes a depressed-index cladding region, a relative refractive index Δ3 of the depressed-index cladding region increasing with increased radial position. The single mode optical fiber has a bend loss at 1550 nm for a 15 mm diameter mandrel of less than about 0.75 dB/turn, a bend loss at 1550 nm for a 20 mm diameter mandrel of less than about 0.2 dB/turn, and a bend loss at 1550 nm for a 30 mm diameter mandrel of less than 0.005 dB/turn. Additionally, the single mode optical fiber has a mode field diameter of 9.0 microns or greater at 1310 nm wavelength.

    LIGHT-BASED OPTICAL FIBER HEATERS USING HOLLOW LIGHT PIPES
    79.
    发明申请
    LIGHT-BASED OPTICAL FIBER HEATERS USING HOLLOW LIGHT PIPES 有权

    公开(公告)号：US20230131288A1

    公开(公告)日：2023-04-27

    申请号：US17969094

    申请日：2022-10-19

    Applicant: CORNING INCORPORATED

    Inventor： Anthony Sebastian Bauco ,  Joel Patrick Carberry ,  Ming-Jun Li ,  Craig Daniel Nie ,  Vincent Matteo Tagliamonti ,  Chunfeng Zhou

    IPC: C03B37/027 ,  C03B37/012 ,  C03B37/018

    Abstract: A method of processing an optical fiber that includes drawing an optical fiber along a fiber pathway through a hollow light pipe, wherein the hollow light pipe comprises a first end having an opening with a radius Rp, a second end and a pipe body comprising a chamber extending from the first to the second end, the fiber pathway extending through the pipe body, and a reflective coating is disposed on the pipe body, and directing a light from a directed light source into the hollow light pipe through the opening such that the light is reflected by the reflective coating while propagating in the hollow light pipe, the optical fiber absorbing the light reflected by the reflective coating, wherein the light enters the opening of the hollow light pipe at an input angle in a range of from 10° to 70° with respect to the fiber pathway.

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