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    OPTICAL WAVEGUIDE CIRCUIT DEVICE
    2.
    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.

    OPTICAL MODULE
    3.
    发明申请
    OPTICAL MODULE 审中-公开

    公开(公告)号：US20190033526A1

    公开(公告)日：2019-01-31

    申请号：US16150883

    申请日：2018-10-03

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Junichi HASEGAWA ,  Yasuyoshi UCHIDA

    IPC: G02B6/14 ,  G02B6/30 ,  G02B6/036 ,  G02B6/132 ,  G02B6/122

    Abstract: An optical module includes a single-mode optical fiber; a high relative refractive-index difference optical fiber having a larger core-to-cladding relative refractive-index difference than that of the single-mode optical fiber fusion-spliced to a first end of the high relative refractive-index difference optical fiber; a planar lightwave circuit that includes an optical waveguide having a core of quartz-based glass doped with a refractive-index raising dopant and a cladding of quartz-based glass, and is connected at a first end thereof to a second end, opposite to the first end, of the high relative refractive-index difference optical fiber; and a silicon thin-wire waveguide element that includes a silicon thin-wire waveguide having a silicon core and a cladding whose refractive index lower than that of the silicon core, and is connected to a second end, opposite to the first end, of the optical waveguide of the planar lightwave circuit.

    OPTICAL WAVEGUIDE STRUCTURE AND OPTICAL WAVEGUIDE CIRCUIT
    5.
    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.

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