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公开(公告)号：US12085757B2
公开(公告)日：2024-09-10
申请号：US17608026
申请日：2020-06-05
发明人： Hiroki Akiyama , Hideaki Yusa , Ryosuke Meo , Hiroshi Takayanagi
IPC分类号： G02B6/255
CPC分类号： G02B6/2553 , G02B6/2551 , G02B6/2552
摘要： A device for fusion splicing, by an arc discharge, a pair or a plurality of pairs of optical fibers arranged so that end surfaces thereof face each other. An optical fiber arrangement portion positions the pair or the plurality of pairs of optical fibers between a pair of electrodes. A control portion controls a voltage applied to the pair of electrodes. The control portion generates a first discharge between the pair of electrodes, stops the first discharge between the pair of electrodes, and then generates an arc discharge between the pair of electrodes to fusion-splice the pair or the plurality of pairs of optical fibers to each other. A discharge time of the first discharge is 200 milliseconds or less. A time from stopping the first discharge to starting the arc discharge is 100 milliseconds or less.
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公开(公告)号：US20240272374A1
公开(公告)日：2024-08-15
申请号：US18569304
申请日：2022-06-09
发明人： Yuki ARAO , Tetsu MORISHIMA , Masahiro SHIBATA
IPC分类号： G02B6/38
CPC分类号： G02B6/3874
摘要： An optical connector of one embodiment includes an optical fiber, a ferrule assembly, and a housing provided with a positioning part on an inner wall surface for suppressing a fluctuation in an aligning state of the optical fiber with respect to the housing. The positioning part includes an inclined surface and a facing surface which contact a part of the ferrule assembly. The ferrule assembly includes a ferrule, and a sleeve member. The sleeve member is constituted by a sleeve and a flange which has edges contacting the inclined surface and the facing surface respectively. Of an outer peripheral portion of the flange, a portion including the edges facing at least one of the inclined surface and the facing surface includes a set including a deformation absorbing part and two contact portions disposed on both sides of the deformation absorbing part.
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公开(公告)号：US20240248257A1
公开(公告)日：2024-07-25
申请号：US18561486
申请日：2022-06-23
发明人： Toshihiko HOMMA , Ryuichiro SATO
CPC分类号： G02B6/2555 , B08B1/165 , B08B1/30 , G02B6/2553
摘要： A fusion splicer for fusion splicing an optical fiber includes a base member having a V groove in which the optical fiber is provided, wherein a stepped portion is provided on an inclined surface of the V groove, and the stepped portion is provided at a position making contact with the optical fiber.
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公开(公告)号：US20240142702A1
公开(公告)日：2024-05-02
申请号：US18547955
申请日：2022-02-25
发明人： Shinsuke KURINO
CPC分类号： G02B6/25 , G02B6/3616
摘要： An optical fiber cutting device comprising: a main body having a positioning portion configured to position the optical fiber and a first magnet; and a moving part having a blade portion configured to put a scratch on the optical fiber and a second magnet, and attached to the main body to be movable between a first position and a second position, wherein the blade portion is capable of putting a scratch on the optical fiber while the moving part is moved from the first position to the second position, and wherein when the moving part is located at the second position, the second magnet is located at a position at which the respective same polarity sides of the second magnet and the first magnet face each other and which is closer to the first position than the first magnet.
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公开(公告)号：US11965801B2
公开(公告)日：2024-04-23
申请号：US17053556
申请日：2019-05-22
发明人： Kazuya Masuda , Tomohiko Ueda , Kenichiro Otsuka , Tsuneari Ito , Tetsufumi Tsuzaki , Yoshifumi Hishikawa , Hitoshi Hatayama
CPC分类号： G01M11/33 , G02B6/354 , G02B6/4292
摘要： A measurement system includes a measurement device including a light source, and a first power meter, and one or a plurality of connection members each configured to optically connect a pair of optical fiber lines of the plurality of optical fiber lines. A first optical fiber line of the pair of optical fiber lines includes a first end and a second end, a second optical fiber line of the pair of optical fiber lines includes a third end and a fourth end, the one or plurality of connection members optically connect the second end to the fourth end, the light source causes testing light to be incident on the first end, and the first power meter measures first intensity of first output light output from the third end by causing the testing light to propagate through the pair of optical fiber lines.
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公开(公告)号：US11953736B2
公开(公告)日：2024-04-09
申请号：US17791500
申请日：2020-02-18
发明人： Kazuya Masuda , Takahiro Inaba , Tomohiko Ueda
CPC分类号： G02B6/3885 , G02B6/3825 , G02B6/3895 , G02B6/4403
摘要： In a fiber connection structure with optical connectors according to one embodiment, among m first connector port groups, arrangement orders of colors of a plurality of the optical fibers in (2×j−1)th (j is a natural number satisfying 1≤j and 2×j≤m) first connector port groups are the same, and among the m first connector port groups, arrangement orders of the colors of the plurality of optical fibers in (2×j)th first connector port groups are the same. The arrangement order of the colors of the plurality of optical fibers in the (2×j)th first connector port group is a reverse order of the arrangement order of the colors of the plurality of optical fibers in the (2×j−1)th first connector port group.
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7.发明授权公开(公告)号：US11656410B2
公开(公告)日：2023-05-23
申请号：US17430177
申请日：2020-03-06
发明人： Shohei Nakamura , Hiroshi Takayanagi , Yuta Ryono , Hideaki Yusa
IPC分类号： G02B6/255
CPC分类号： G02B6/2553 , G02B6/2555
摘要： A fusion splicer includes an irradiation unit to irradiate an optical fiber with first wavelength light and second wavelength light; a light receiving unit; a processing unit to extract first feature data from first luminance information based on the first wavelength light and to extract second feature data from second luminance information based on the second wavelength light; a determination unit to determine whether the first feature data and the second feature data are within a predetermined range; and a drive unit to move one optical fiber on the basis of the luminance information from which the feature data is extracted so as to arrange the axes of the optical fibers in a predetermined positional relationship when the feature data is determined to be within the predetermined range. The processing unit extracts the second feature data when the first feature data is not within the predetermined range.
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公开(公告)号：US20230152514A1
公开(公告)日：2023-05-18
申请号：US17917493
申请日：2021-04-05
发明人： Shigehiro NAGANO , Takemi HASEGAWA , Jun KINUGASA , Kazuaki MASUI
CPC分类号： G02B6/03694 , G02B6/03622 , G02B6/02052
摘要： A gain flattening filter includes a first optical fiber that has a core, a first cladding, and a second cladding and that has a uniform composition in a length direction; and a pair of second optical fibers fused to both ends of the first optical fiber. The first optical fiber has a first section in which a slanted refractive index grating is formed and a pair of second sections connecting both ends of the first section to the pair of second optical fibers. The first cladding contains a photosensitive material whose refractive index increases upon irradiation with light having a specific wavelength. In the core, a tensile stress remains in the first section. An average MFD of the second sections is larger than an average MFD of the second optical fibers and smaller than an average MFD of the first section.
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公开(公告)号：USD983851S1
公开(公告)日：2023-04-18
申请号：US29778636
申请日：2021-04-14
设计人： Kazufumi Joko , Shohei Nakamura , Hiroki Akiyama
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公开(公告)号：US20230113680A1
公开(公告)日：2023-04-13
申请号：US17948517
申请日：2022-09-20
IPC分类号： G02B6/38
摘要： An optical connector includes first and second ferrules, first and second front housings each accommodating a corresponding ferrule of the first and second ferrules inside, an inner housing connected to rear ends of the first and second front housings, an outer housing including a first latch and accommodating the inner housing inside, and a tab disposed in a second direction intersecting a first direction with respect to the outer housing. The inner housing includes second latches disposed on first and second side portions respectively. The first and second side portions arranged in a third direction intersecting both the first direction and the second direction. The second latches include respective engaging portions that are engageable with the outer housing. Each of the engaging portions is pushed toward the inside of the inner housing to release a state of engagement between the inner housing and the outer housing.
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