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    Switch device
    1.
    发明授权
    Switch device 有权

    公开(公告)号：US09638865B2

    公开(公告)日：2017-05-02

    申请号：US15092170

    申请日：2016-04-06

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Junichi Hasegawa ,  Kazutaka Nara

    IPC: G02B6/35 ,  H04J14/02 ,  H04Q11/00 ,  G02F1/313 ,  G02B6/293

    CPC classification number: G02B6/3544 ,  G02B6/29383 ,  G02B6/356 ,  G02F1/3136 ,  H04J14/0219 ,  H04Q11/0001 ,  H04Q11/0005 ,  H04Q2011/0015

    Abstract: The present invention provides a switch device for an optical signal which has high extendibility and which can suppress an increase of loss in extension. A switch device in one embodiment of the present invention includes, in a housing, four splitter portions, four switch portions, and extension splitter portions. The splitter portions are connected to path-side ports, the switch portions are connected to client-side ports, and the splitter portions and the switch portions are connected to one another via shuffle fiber arrays. One ends of the extension splitter portions are connected to path-side extension ports, and the other ends thereof are connected to client-side extension ports. The number of wavelengths processable by the switch device can be easily changed by changing a connection state of optical fibers to the path-side ports, the client-side ports, the path-side extension ports, and the client-side extension ports.

    OPTICAL WAVEGUIDE STRUCTURE AND OPTICAL WAVEGUIDE CIRCUIT
    3.
    发明申请
    OPTICAL WAVEGUIDE STRUCTURE AND OPTICAL WAVEGUIDE CIRCUIT 审中-公开

    公开(公告)号：US20190033521A1

    公开(公告)日：2019-01-31

    申请号：US16145519

    申请日：2018-09-28

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Yasuyoshi UCHIDA ,  Junichi Hasegawa

    IPC: G02B6/12 ,  G02B6/126 ,  G02B6/122

    Abstract: An optical waveguide structure includes: a cladding; a first core in the cladding having a first end surface; a second core in the cladding having a second end surface; slit formed horizontally with respect to a waveguide direction of the light to be waveguided by the first and second cores; and a first part and a second part composed of a material identical to a material of the cladding, wherein a pair of the first and second end surfaces disposed opposing each other with the slit interposed between the pair of the first and second end surfaces, the first part is interposed between the first end surface and the slit, and the second part is interposed between the second end surface and the slit.

    Optical fiber terminal structure, optical element connection structure, and method for manufacturing optical fiber terminal structure
    7.
    发明授权
    Optical fiber terminal structure, optical element connection structure, and method for manufacturing optical fiber terminal structure 有权

    公开(公告)号：US10935728B2

    公开(公告)日：2021-03-02

    申请号：US16694645

    申请日：2019-11-25

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Junichi Hasegawa

    IPC: G02B6/30 ,  G02B6/38

    Abstract: An optical fiber terminal structure is comprised of a plurality of optical fibers, a plurality of high-Δ optical fibers connected to the optical fibers, respectively, and a capillary. The capillary has a hole in which the optical fibers and the high-Δ optical fibers are inserted, and the optical fibers and the high-Δ optical fibers together are fixed in the hole. Connection parts of each of the optical fibers and the high-Δ optical fibers are also positioned inside the capillary, and end surfaces of the high-Δ optical fibers are exposed so that adjacent high-Δ optical fibers are in contact with each other in an end surface of the capillary.

    Optical waveguide element
    8.
    发明授权
    Optical waveguide element 有权

    公开(公告)号：US10564355B2

    公开(公告)日：2020-02-18

    申请号：US16184333

    申请日：2018-11-08

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Junichi Hasegawa

    IPC: G02B6/126 ,  G02B6/122 ,  G02B6/02 ,  G02B27/10 ,  G02B6/12

    Abstract: A disclosed optical waveguide element includes a cladding portion formed on a substrate; an optical waveguide which is formed inside the cladding portion and has a refractive index higher than that of the cladding portion; an optical filter which is inserted into a slit formed in the cladding portion to divide the optical waveguide into a first optical waveguide and a second optical waveguide; and a first thin film element which is inserted into the slit along with the optical filter and is provided with a first thin film lens, wherein the first thin film lens provided in the first thin film element converges light that has propagated through the first optical waveguide and outputs into the slit into the second optical waveguide.

    Optical waveguide circuit device
    9.
    发明授权
    Optical waveguide circuit device 有权

    公开(公告)号：US10545292B2

    公开(公告)日：2020-01-28

    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.

    CROSS OPTICAL WAVEGUIDE STRUCTURE AND OPTICAL WAVEGUIDE DEVICE
    10.
    发明申请
    CROSS OPTICAL WAVEGUIDE STRUCTURE AND OPTICAL WAVEGUIDE DEVICE 审中-公开

    公开(公告)号：US20190331852A1

    公开(公告)日：2019-10-31

    申请号：US16506768

    申请日：2019-07-09

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Yasuyoshi Uchida ,  Junichi Hasegawa

    IPC: G02B6/125 ,  G02B6/122

    Abstract: A cross optical waveguide structure includes a first optical waveguide, a second optical waveguide, and an intersection portion positioned in the same plane. The first optical waveguide includes a first fixed-width portion, a second fixed-width portion, a first tapering portion, and a second tapering portion. The second optical waveguide includes a third fixed-width portion, a fourth fixed-width portion, a third tapering portion, and a fourth tapering portion. The intersection portion is linked to the first to the fourth tapering portions having such a tapering shape that a mode field radius of the light input to the first fixed-width portion, the second fixed-width portion, or the third fixed-width portion, and the fourth fixed-width portion is reduced by the first tapering portion, the second tapering portion, the third tapering portion, the fourth tapering portion, respectively, and the light is collected in the intersection portion.

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