公开(公告)号：US20220003924A1

公开(公告)日：2022-01-06

申请号：US17479343

申请日：2021-09-20

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kohei KAWASAKI ,  Ryuichi SUGIZAKI ,  Masayoshi TSUKAMOTO ,  Masanori TAKAHASHI ,  Shigehiro TAKASAKA ,  Koichi MAEDA

IPC: G02B6/04 ,  G02B6/40 ,  C03C25/106 ,  C03C25/26

Abstract: An optical fiber bundle structure includes: plural optical fiber core wires; a crossing preventing member; and a grasping member. Further, the crossing preventing member has slits and the widths of the slits positioned at the respective sides are each equal to or larger than a difference between: a length of one side of a polygon circumscribing the plural optical fiber core wires at a hindmost end portion of the slits at the trailing end; and a length of one side of a polygon circumscribing the plural optical fiber core wires at the leading end.

公开(公告)号：US20230411922A1

公开(公告)日：2023-12-21

申请号：US18363030

申请日：2023-08-01

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kohei KAWASAKI ,  Hajime MORI ,  Taisuke ATSUMI

IPC: H01S3/067 ,  G02B6/28 ,  G02B6/02

CPC classification number: H01S3/06783 ,  G02B6/02042 ,  G02B6/2856

Abstract: A laser processing apparatus includes: at least two first input optical fibers; an output optical fiber; a coupler configured to optically couple a first end of a bundle portion, in which the at least two first input optical fibers are bundled, to a second end of the output optical fiber; at least one first light source optically connected to one of the first input optical fibers to output laser light; and an optical head optically connected to the output optical fiber to output laser light and passing through the first input optical fiber and the output optical fiber. In a cross section intersecting an axial direction of the first end, a cladding of the first input optical fiber has an extending portion extending linearly in a direction intersecting the axial direction between cores of two first input optical fibers adjacent in a circumferential direction.

公开(公告)号：US20240151898A1

公开(公告)日：2024-05-09

申请号：US18410522

申请日：2024-01-11

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kohei KAWASAKI ,  Ryuichi SUGIZAKI ,  Masayoshi TSUKAMOTO ,  Masanori TAKAHASHI ,  Shigehiro TAKASAKA ,  Koichi MAEDA

IPC: G02B6/04 ,  C03C25/106 ,  C03C25/26 ,  G02B6/40

CPC classification number: G02B6/04 ,  C03C25/106 ,  C03C25/26 ,  G02B6/403

Abstract: An optical fiber bundle structure includes: plural optical fiber core wires; a crossing preventing member; and a grasping member. Further, the crossing preventing member has slits and the widths of the slits positioned at the respective sides are each equal to or larger than a difference between: a length of one side of a polygon circumscribing the plural optical fiber core wires at a hindmost end portion of the slits at the trailing end; and a length of one side of a polygon circumscribing the plural optical fiber core wires at the leading end.

公开(公告)号：US20240142697A1

公开(公告)日：2024-05-02

申请号：US18410605

申请日：2024-01-11

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kohei KAWASAKI ,  Ryuichi SUGIZAKI ,  Masayoshi TSUKAMOTO ,  Masanori TAKAHASHI ,  Shigehiro TAKASAKA ,  Koichi MAEDA

IPC: G02B6/04 ,  C03C25/106 ,  C03C25/26 ,  G02B6/40

CPC classification number: G02B6/04 ,  C03C25/106 ,  C03C25/26 ,  G02B6/403

Abstract: An optical fiber bundle structure includes: plural optical fiber core wires; a crossing preventing member; and a grasping member. Further, the crossing preventing member has slits and the widths of the slits positioned at the respective sides are each equal to or larger than a difference between: a length of one side of a polygon circumscribing the plural optical fiber core wires at a hindmost end portion of the slits at the trailing end; and a length of one side of a polygon circumscribing the plural optical fiber core wires at the leading end.

公开(公告)号：US20220413219A1

公开(公告)日：2022-12-29

申请号：US17894478

申请日：2022-08-24

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kohei KAWASAKI

IPC: G02B6/122

Abstract: An optical coupler includes: input-type optical fibers; an output-type optical fiber; and radiant light processing units. The input-type optical fibers are bundled at leading end side to form a fiber bundle portion, and leading end portion of the fiber bundle portion is connected to the output-type optical fiber. In at least either the input-type optical fibers or the output-type optical fiber, a tapered portion is formed in which cross-sectional area is tapered to become narrower in light traveling direction indicating direction from the input-type optical fibers toward the output-type optical fiber. The number of the tapered portion is equal to or greater than two. Each radiant light processing unit is disposed to mutually overlap with one of the tapered portions or away from one of the tapered portions in the light traveling direction, and is disposed on outer periphery of the input-type optical fibers or the output-type optical fiber.

公开(公告)号：US20170168247A1

公开(公告)日：2017-06-15

申请号：US15443987

申请日：2017-02-27

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kengo WATANABE ,  Tsunetoshi SAITO ,  Katsuki SUEMATSU ,  Mitsuhiro IWAYA ,  Kohei KAWASAKI ,  Masahito MORIMOTO

IPC: G02B6/38

CPC classification number: G02B6/3885 ,  G02B6/3834 ,  G02B6/3839 ,  G02B6/3843 ,  G02B6/40

Abstract: A plurality of holes are formed in a ferrule. The holes are at sites penetrated by the tips of optical fibers. An opening is formed in the upper surface of the ferrule and an internal housing section is exposed from the opening. The housing section is at a site at which an optical fiber holding member is housed. The optical fibers are held by the optical fiber holding member. The optical fibers are multi-core fibers. In other words, the optical fibers have a specified axis of symmetry in a cross-section vertical to the longitudinal direction of the optical fibers and have orientation relative to a rotation direction having the longitudinal direction as the axis thereof.