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公开(公告)号：US20230204853A1
公开(公告)日：2023-06-29
申请号：US18178620
申请日：2023-03-06
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Masanori TAKAHASHI , Koichi MAEDA , Ryuichi SUGIZAKI , Yoshihiro ARASHITANI
IPC: G02B6/02
CPC classification number: G02B6/02042
Abstract: A multicore fiber includes: a plurality of first glass regions each including: a core portion; and a first cladding portion having a lower refractive index than a maximum refractive index of the core portion; and a cladding region formed on outer peripheries of the plurality of first glass regions, wherein compressive stress is applied to the plurality of first glass regions.
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公开(公告)号：US20230006410A1
公开(公告)日：2023-01-05
申请号：US17931264
申请日：2022-09-12
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Shigehiro TAKASAKA , Koichi MAEDA , Keiichi AISO , Shinichi ARAI , Ryuichi SUGIZAKI , Kazunori MUKASA , Yukihiro TSUCHIDA , Masanori TAKAHASHI
Abstract: An optical amplifying fiber includes: at least one single core portion doped with a rare-earth element; an inner cladding portion configured to enclose the at least one core portion, the inner cladding portion having a lower refractive index than maximum refractive index of each core portion; and an outer cladding portion configured to enclose the inner cladding portion, the outer cladding portion having a lower refractive index than refractive index of the inner cladding portion, wherein the inner cladding portion includes a plurality of air bubbles.
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Patent Agency Ranking
公开(公告)号：US20190317279A1
公开(公告)日：2019-10-17
申请号：US16453555
申请日：2019-06-26
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Yasuyoshi UCHIDA , Yuuki TANIGUCHI , Hiroshi KAWASHIMA , Kazutaka NARA , Masanori TAKAHASHI
Abstract: An optical waveguide element includes: a cladding portion made of silica-based glass; and a plurality of optical waveguides positioned in the cladding portion and made of silica-based glass in which ZrO2 crystal particles are dispersed. The optical waveguide element is a planar lightwave circuit. The plurality of optical waveguides configure an arrayed waveguide grating element.
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公开(公告)号：US20160246001A1
公开(公告)日：2016-08-25
申请号：US15145482
申请日：2016-05-03
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Yasuyoshi UCHIDA , Yuuki TANIGUCHI , Hiroshi KAWASHIMA , Kazutaka NARA , Masanori TAKAHASHI
CPC classification number: G02B6/12011 , C03C14/004 , G02B6/12016 , G02B6/122 , G02B6/1228 , G02B6/125 , G02B6/136 , G02B6/14 , G02B6/2773 , G02B6/29341 , G02B2006/121
Abstract: An optical waveguide element includes: a cladding portion made of silica-based glass; and a plurality of optical waveguides positioned in the cladding portion and made of silica-based glass in which ZrO2 crystal particles are dispersed. The optical waveguide element is a planar lightwave circuit. The plurality of optical waveguides configure an arrayed waveguide grating element.
Abstract translation: 光波导元件包括：由二氧化硅基玻璃制成的包覆部分; 以及多个光波导，其位于所述包层部中，由分散有ZrO 2结晶粒子的二氧化硅系玻璃构成。 光波导元件是平面光波电路。 多个光波导构成阵列波导光栅元件。
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公开(公告)号：US20240310575A1
公开(公告)日：2024-09-19
申请号：US18604728
申请日：2024-03-14
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Yusuke MATSUNO , Masanori TAKAHASHI , Ryuichi SUGIZAKI , Akio TANABE , Yoshihiro ARASHITANI
CPC classification number: G02B6/021 , G02B6/02042 , G02B6/2551
Abstract: An optical fiber connection structure includes a first optical fiber and a second optical fiber each including plural cores and a cladding surrounding outer peripheries of the plural cores, the first optical fiber and the second optical fiber being connected to each other at end faces of the first optical fiber and the second optical fiber, arrangements of the plural cores of the first optical fiber and the second optical fiber matching each other at least partly.
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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.
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公开(公告)号：US20230123319A1
公开(公告)日：2023-04-20
申请号：US18068039
申请日：2022-12-19
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Shigehiro TAKASAKA , Koichi MAEDA , Keiichi AISO , Shinichi ARAI , Kazunori MUKASA , Yukihiro TSUCHIDA , Masanori TAKAHASHI , Ryuichi SUGIZAKI
Abstract: An optical amplifying fiber includes: at least one core portion including a rare earth element added therein; an inner cladding portion surrounding the at least one core portion, the inner cladding portion having a refractive index lower than a maximum refractive index of the at least one core portion; and an outer cladding portion surrounding the inner cladding portion, the outer cladding portion having a refractive index lower than the refractive index of the inner cladding portion, the inner cladding portion including different refractive index regions each having a refractive index different from a refractive index of a region adjacent to that different refractive index region.
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