公开(公告)号：US20150172794A1

公开(公告)日：2015-06-18

申请号：US14613955

申请日：2015-02-04

Applicant: Furukawa Electric Co., Ltd.

Inventor： Junichi HASEGAWA ,  Noritaka MATSUBARA ,  Kazutaka NARA

IPC: H04Q11/00 ,  H04J14/02

CPC classification number: H04Q11/0005 ,  G02B6/12 ,  G02F1/3136 ,  G02F2201/16 ,  H04J14/0215 ,  H04Q2011/0015

Abstract: An object of the invention is to provide a switch device, which achieves high expandability, high layout freedom, and low losses. A switch device of an embodiment includes a splitter unit, a first switch unit, a second switch unit, a fiber array which connects the splitter unit to the two switch units, and a control board. The fiber array includes multiple optical fibers bundled in an arrayed fashion. At an end of the fiber array on the splitter unit side, all the optical fibers are bundled into one and connected to the splitter unit. At an end of the fiber array on the switch unit side, the multiple optical fibers are divided into two groups and formed into two sub-fiber arrays, which are connected to the first switch unit and the second switch unit, respectively.

Abstract translation: 本发明的目的是提供一种实现高扩展性，高布局自由度和低损耗的开关装置。 实施例的开关装置包括分路器单元，第一开关单元，第二开关单元，将分路单元连接到两个开关单元的光纤阵列和控制板。 光纤阵列包括以阵列方式捆绑的多根光纤。 在分路器单元侧的光纤阵列的一端，所有的光纤被捆成一个并连接到分路器单元。 在开关单元侧的光纤阵列的一端，多根光纤被分成两组，分别形成两个子光纤阵列，分别连接到第一开关单元和第二开关单元。

公开(公告)号：US20210376570A1

公开(公告)日：2021-12-02

申请号：US17444871

申请日：2021-08-11

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Junichi HASEGAWA ,  Noritaka MATSUBARA

IPC: H01S5/14 ,  G02B6/125 ,  H01S5/10 ,  G02B6/122

Abstract: A ring-resonator filter device includes: a waveguide device that includes a core. Further, the core constitutes two ring resonator filters, each of the two ring resonator filters includes two arm portions, a ring-shaped portion, and two optical coupling/branching portions that optically couple the two arm portions and the ring-shaped portion, respectively, and the two ring-shaped portions cross each other.

公开(公告)号：US20210362147A1

公开(公告)日：2021-11-25

申请号：US17397272

申请日：2021-08-09

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Go KOBAYASHI ,  Junichi HASEGAWA ,  Noritaka MATSUBARA

IPC: B01L3/00

Abstract: A storage container includes: a substrate having a plurality of storage wells to store an object therein, the storage wells being formed on a predetermined substrate surface of the substrate. Further, the storage wells each includes an opening forming portion forming an opening portion opening on the substrate surface, and having an inclined surface that inclines from the substrate surface downward in a depth direction on an inner surface of the opening portion; and a bottomed storage portion that has a side wall surface extending in a direction perpendicular to the substrate surface on a lower side in the depth direction of the storage well relative to the opening forming portion, and that communicates with a region on the substrate surface through the opening portion, and a lower end of the inclined surface is connected to the side wall surface of the storage portion, forming a ridgeline.

公开(公告)号：US20240393099A1

公开(公告)日：2024-11-28

申请号：US18794032

申请日：2024-08-05

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Noritaka MATSUBARA

IPC: G01B9/02091 ,  G01B9/02 ,  G02B6/125

Abstract: An optical coherence tomograph includes: a light source configured to output light; a branching portion configured to separate the light from the light source into irradiation light and reference light; a reference optical system configured to transmit the reference light from the branching portion; an irradiation optical system configured to transmit the irradiation light from the branching portion so that an object is irradiated therewith, and transmit reflection light of the irradiation light reflected by the object; a coherence portion configured to generate coherent light by causing the reflection light from the irradiation optical system and the reference light from the reference optical system to be coherent; a coherent light output portion configured to output the coherent light; and a coupling element configured to function as the branching portion and the coherence portion.

公开(公告)号：US20210373234A1

公开(公告)日：2021-12-02

申请号：US17401175

申请日：2021-08-12

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Noritaka MATSUBARA ,  Junichi HASEGAWA

IPC: G02B6/12 ,  G02B6/125

Abstract: An optical waveguide circuit includes: a ring waveguide; an input connection waveguide; an output connection waveguide; and an optical multiplexing/demultiplexing part that optically connects the ring waveguide with the input connection waveguide, and that optically connects the ring waveguide with the output connection waveguide. Further, at least one of the input connection waveguide and the output connection waveguide includes a plurality of curved waveguides, a sum total of products of curvature signs and bending angles of the curved waveguides and a sum total of a curvature sign and a bending angle of the ring waveguide have a same absolute value with signs opposite to each other, and rotation of a polarization plane of light generated in the ring waveguide and rotation of a polarization plane of light generated in the curved waveguides cancel each other out.

公开(公告)号：US20230035065A1

公开(公告)日：2023-02-02

申请号：US17884875

申请日：2022-08-10

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Noritaka MATSUBARA ,  Junichi HASEGAWA ,  Etsuji KATAYAMA ,  Tatsuro KUROBE

IPC: H01S5/023 ,  H01S5/02375 ,  G02B6/12

Abstract: A semiconductor optical device includes: a base configured to intersect with a first direction; a first protrusion configured to protrude from the base in the first direction, the first protrusion including a planar lightwave circuit including: a core layer; and a cladding layer surrounding the core layer; a second protrusion configured to protrude from the base in the first direction and arranged along the first protrusion in a second direction intersecting with the first direction, a height of the second protrusion from the base in the first direction being lower than a height of the first protrusion; an optical semiconductor element placed on a facet of the second protrusion in the first direction and optically connected to the core layer; and a marker provided on the second protrusion in a manner exposed on the facet, the marker being made of a same material as the core layer.

公开(公告)号：US20160025930A1

公开(公告)日：2016-01-28

申请号：US14877605

申请日：2015-10-07

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Junichi HASEGAWA ,  Noritaka MATSUBARA ,  Kazutaka NARA

IPC: G02B6/293 ,  G02B6/35

CPC classification number: G02B6/29355 ,  G02B6/122 ,  G02B6/1223 ,  G02B6/29383 ,  G02B6/3546 ,  G02B2006/12145 ,  G02B2006/1215 ,  G02B2006/12159 ,  G02F1/3137 ,  G02F2001/212 ,  G02F2001/311

Abstract: An object of the present invention is to provide a switch unit for optical signals which is capable of reducing an area required for arrangement and reducing manufacturing costs, and a switch apparatus including the switch unit. A switch unit 30 according to one embodiment of the present invention includes two optical switch arrays 34a, 34b arranged to face in opposite directions and in parallel on a substrate. The two optical switch arrays extend along a surface of a chip, and each have four optical switches 31 arranged in parallel. Such a configuration makes it possible to reduce the size of the switch unit because in an excess region of one of the optical switch array, the other optical switch array is disposed.

Abstract translation: 本发明的目的是提供一种用于光信号的开关单元，其能够减少布置所需的面积并降低制造成本，以及包括开关单元的开关装置。 根据本发明的一个实施例的开关单元30包括两个光学开关阵列34a，34b，其布置为在基板上相反方向并且平行地面对。 两个光开关阵列沿着芯片的表面延伸，并且每个具有平行布置的四个光开关31。 这样的配置使得可以减小开关单元的尺寸，因为在另一个光开关阵列中的光开关阵列之一的多余区域中。