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    OPTICAL COMPONENT
    3.
    发明申请
    OPTICAL COMPONENT 有权

    公开(公告)号：US20170199341A1

    公开(公告)日：2017-07-13

    申请号：US15470282

    申请日：2017-03-27

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Masanori TAKAHASHI ,  Junichi Hasegawa ,  Takeshi Yagi

    IPC: G02B6/42 ,  G02B6/255 ,  G02B6/14 ,  G02B6/02

    CPC classification number: G02B6/421 ,  G02B6/02395 ,  G02B6/122 ,  G02B6/14 ,  G02B6/24 ,  G02B6/2551 ,  G02B6/30 ,  G02B6/4216 ,  G02B6/4243 ,  G02B6/4249

    Abstract: An optical component includes: a high-relative-refractive-index-difference optical fiber; a single-mode optical fiber fusion-spliced to the high-relative-refractive-index-difference optical fiber, a mode-field diameter of the single-mode optical fiber being greater than a mode-field diameter of the high-relative-refractive-index-difference optical fiber at a wavelength of 1550 nm; and an optical device connected to an end surface of the high-relative-refractive-index-difference optical fiber where the single-mode optical fiber is not fusion-spliced. A total of a connection loss between the high-relative-refractive-index-difference optical fiber and the single-mode optical fiber at the wavelength of 1550 nm and a connection loss between the high-relative-refractive-index-difference optical fiber and the optical device at the wavelength of 1550 nm is less than a connection loss at the wavelength of 1550 nm when the single-mode optical fiber is connected to the optical device directly.

    OPTICAL CONNECTION COMPONENT
    5.
    发明申请
    OPTICAL CONNECTION COMPONENT 有权

    公开(公告)号：US20210208338A1

    公开(公告)日：2021-07-08

    申请号：US17207882

    申请日：2021-03-22

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Masanori TAKAHASHI ,  Mitsuhiro IWAYA ,  Masayoshi TSUKAMOTO

    IPC: G02B6/255

    Abstract: An optical connection component includes an optical fiber; a high relative refractive-index difference optical fiber that is fusion-spliced to the optical fiber and has a greater relative refractive-index difference to a cladding of a core than the optical fiber; and an accommodating member accommodating the entire length of the optical fiber and the high relative refractive-index difference optical fiber, and has a first end face on which an end face of the optical fiber on the side opposite to the fusion-spliced side is exposed to be substantially flush with the first end face, and a second end face on which an end face of the high relative refractive-index difference optical fiber on the side opposite to the fusion-spliced side is exposed to be substantially flush with the second end face. The optical fiber and the high relative refractive-index difference optical fiber are fixed to the accommodating member.

    OPTICAL WAVEGUIDE CIRCUIT DEVICE
    6.
    发明申请
    OPTICAL WAVEGUIDE CIRCUIT DEVICE 审中-公开

    公开(公告)号：US20190033530A1

    公开(公告)日：2019-01-31

    申请号：US16145489

    申请日：2018-09-28

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Masanori TAKAHASHI ,  Yasuyoshi UCHIDA ,  Shintaro YAMASAKI ,  Junichi HASEGAWA

    IPC: G02B6/35 ,  G02B6/293

    Abstract: An optical waveguide circuit device includes: an optical waveguide circuit including a cladding layer formed on a substrate and made from silica-based glass, and an optical waveguide formed within the cladding layer and made from silica-based glass; heaters formed over the cladding layer and the optical waveguide and configured to heat the optical waveguide; wiring line electrode layers formed over the cladding layer, each of the wiring line electrode layers being coupled to a corresponding heater of the heaters and configured to allow electrical power to be supplied to the coupled heater; and an insulating layer covering the cladding layer, the heaters, and the wiring line electrode layers. The wiring line electrode layers adjacent to each other in a plan view are formed in different wiring layers. The wiring line electrode layers adjacent to each other in the same wiring layer are spaced by at least a predetermined distance.

    MULTI-CORE FIBER, PITCH CONVERTER, OPTICAL FIBER CONNECTION STRUCTURE, AND METHOD OF MANUFACTURING OPTICAL FIBER CONNECTION STRUCTURE
    7.
    发明公开
    MULTI-CORE FIBER, PITCH CONVERTER, OPTICAL FIBER CONNECTION STRUCTURE, AND METHOD OF MANUFACTURING OPTICAL FIBER CONNECTION STRUCTURE 审中-公开

    公开(公告)号：US20240151897A1

    公开(公告)日：2024-05-09

    申请号：US18413136

    申请日：2024-01-16

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Masanori TAKAHASHI ,  Ryuichi SUGIZAKI

    IPC: G02B6/02 ,  G02B6/38

    CPC classification number: G02B6/02042 ,  G02B6/3885

    Abstract: A multi-core fiber includes: a plurality of core portions; and a cladding portion surrounding outer circumferences of the plurality of core portions and having a refractive index lower than a maximum refractive index of the plurality of core portions. The multi-core fiber has a mode field diameter of 5 μm or smaller at a wavelength of 1550 nm, the multi-core fiber has a core pitch of 20 μm or smaller, the core pitch being an interval between centers of nearest neighboring ones of the plurality of core portions in a cross section orthogonal to a longitudinal direction. The multi-core fiber has inter-core crosstalk of −20 dB/km or less. The multi-core fiber has a macrobending loss of 0.1 dB/m or less at the wavelength of 1550 nm when the multi-core fiber is bent at a radius of 5 mm.

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