中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

33 records (took 0.015 seconds)

    MULTICORE FIBER
    12.
    发明公开
    MULTICORE FIBER 审中-公开

    公开(公告)号：US20240288628A1

    公开(公告)日：2024-08-29

    申请号：US18657935

    申请日：2024-05-08

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Kazunori MUKASA

    IPC: G02B6/02 ,  G02B6/032 ,  G02B6/036

    CPC classification number: G02B6/02042 ,  G02B6/032 ,  G02B6/03638

    Abstract: A multicore fiber includes: a plurality of first linear portions including a first core portion, and a first cladding portion having a refractive index lower than a maximum refractive index of the first core portion, the first cladding portion surrounding an outer periphery of the first core portion; and a first tubular portion. The first linear portions are respectively joined to an inner wall of the first tubular portion, and two of the first linear portions are not in contact with each other in at least a portion in a longitudinal direction on a first virtual line connecting centers of two of the first core portions included in the two of the first linear portions, on a cross-section perpendicular to the longitudinal direction.

    OPTICAL FIBER, METHOD OF DESIGNING OPTICAL FIBER, AND METHOD OF MANUFACTURING OPTICAL FIBER
    14.
    发明公开
    OPTICAL FIBER, METHOD OF DESIGNING OPTICAL FIBER, AND METHOD OF MANUFACTURING OPTICAL FIBER 审中-公开

    公开(公告)号：US20230324605A1

    公开(公告)日：2023-10-12

    申请号：US18334505

    申请日：2023-06-14

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Kazunori MUKASA

    IPC: G02B6/036 ,  G02B27/00 ,  G02B6/02

    CPC classification number: G02B6/03627 ,  G02B27/0012 ,  G02B6/02019

    Abstract: An optical fiber includes: a core portion; a side core layer that surrounds an outer periphery of the core portion; and a cladding portion that surrounds an outer periphery of the side core layer, and in which Δ1>ΔClad>Δ2 and 0>Δ2 hold, where Δ1 is an average maximum relative refractive-index difference of the core portion with respect to an average refractive index of the cladding portion, Δ2 is a relative refractive-index difference of an average refractive index of the side core layer with respect to the average refractive index of the cladding portion, and ΔClad is a relative refractive-index difference of the average refractive index of the cladding portion with respect to pure silica glass.

    OPTICAL FIBER
    15.
    发明申请
    OPTICAL FIBER 有权

    公开(公告)号：US20220206215A1

    公开(公告)日：2022-06-30

    申请号：US17655486

    申请日：2022-03-18

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Kazunori MUKASA

    IPC: G02B6/036 ,  G02B6/02

    Abstract: An optical fiber includes: a core portion made of glass; and a cladding portion made of glass, having a refractive index lower than the refractive index of the core portion, and positioned on an outer periphery of the core portion. Further, the cladding portion has an outer diameter smaller than 100 μm, and the core portion has a relative refractive-index difference of 0.32% to 0.40% with respect to the cladding portion.

    Holey Fiber
    16.
    发明申请
    Holey Fiber 审中-公开
    多孔纤维

    公开(公告)号：US20140133816A1

    公开(公告)日：2014-05-15

    申请号：US14157612

    申请日：2014-01-17

    Applicant: Furukawa Electric Co., Ltd.

    Inventor： Kazunori MUKASA

    IPC: G02B6/02

    CPC classification number: G02B6/02347 ,  G02B6/02366

    Abstract: A holey fiber includes a core portion and a cladding portion in which holes located in the outer periphery of the core portion and arranged around the core portion in layers, and a low refractive index layer having an internal diameter that is equal to or larger than four times a mode field radius of light in the core portion and having a refractive index lower than the core portion are formed.

    Abstract translation: 多孔纤维包括芯部和包层部分，其中位于芯部的外周中的孔分布在芯部周围，并且具有等于或大于4的内径的低折射率层 形成芯部中的模场半径并具有比芯部低的折射率。

    OPTICAL FIBER
    17.
    发明公开
    OPTICAL FIBER 审中-公开

    公开(公告)号：US20240150227A1

    公开(公告)日：2024-05-09

    申请号：US18538487

    申请日：2023-12-13

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Kazunori MUKASA ,  Keiichi AISO

    IPC: C03C13/04 ,  G02B6/02 ,  G02B6/028

    CPC classification number: C03C13/046 ,  G02B6/02395 ,  G02B6/0283 ,  C03C2201/11 ,  C03C2201/50

    Abstract: An optical fiber includes a core portion made of silica-based glass; and a cladding portion made of silica-based glass having lower maximum refractive index than the core portion, the cladding portion surrounding an outer periphery of the core portion. The core portion is doped with an alkali metal element and chlorine. An average concentration of chlorine is higher than 800 atomic ppm on a cross-section perpendicular to a longitudinal direction of the core portion. A region doped with the alkali metal element is larger than a region doped with chlorine at 800 atomic ppm or higher.

    OPTICAL FIBER
    18.
    发明申请
    OPTICAL FIBER 有权

    公开(公告)号：US20220179150A1

    公开(公告)日：2022-06-09

    申请号：US17651979

    申请日：2022-02-22

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Kazunori MUKASA ,  Tamas MIHALFFY ,  Zoltan VARALLYAY

    IPC: G02B6/02 ,  C03C25/1065

    Abstract: An optical fiber includes: a core made of silica based glass; a cladding made of silica based glass, the cladding having a refractive index that is lower than a maximum refractive index of the core; and a coating including a primary coating layer, and a secondary coating layer. An outer diameter of the cladding is less than 100 μm. A thickness of the primary coating layer is larger than or equal to 15 μm. A mode field diameter at a wavelength of 1310 nm is larger than or equal to 8.6 μm and smaller than or equal to 9.2 μm. An effective cutoff wavelength is smaller than or equal to 1260 μm. A bending loss at a wavelength of 1550 nm when bending is made at a diameter of 60 mm is smaller than or equal to 0.1 dB/100 turn.

    OPTICAL FIBER
    19.
    发明申请
    OPTICAL FIBER 有权

    公开(公告)号：US20220082753A1

    公开(公告)日：2022-03-17

    申请号：US17456601

    申请日：2021-11-26

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Kazunori MUKASA ,  Tamas MIHALFFY ,  Zoltan VARALLYAY

    IPC: G02B6/02

    Abstract: An optical fiber includes: a core made of silica-based glass; a cladding configured to cover an outer circumference of the core and made of silica-based glass having a refractive index smaller than a maximum refractive index of the core; and a coating configured to cover an outer circumference of the cladding. The cladding has an outer diameter of 120 μm or smaller, a mode field diameter at a wavelength of 1310 nm is 8.6 μm to 9.2 μm, an effective cut-off wavelength is 1260 μm or smaller, and a bending loss at a wavelength of 1550 nm in a case of bending at a diameter of 20 mm is 0.75 dB/turn or smaller.

Patent Agency Ranking