公开(公告)号：US20240038264A1

公开(公告)日：2024-02-01

申请号：US18265304

申请日：2021-08-20

申请人： FUJIKURA LTD.

发明人： Yuichiro Kunai

IPC分类号： G11B7/0045 ,  G11B7/1353 ,  G11B7/0033 ,  G11B7/24035 ,  G11B7/1367

CPC分类号： G11B7/00454 ,  G11B7/1353 ,  G11B7/0033 ,  G11B7/24035 ,  G11B7/1367

摘要： An optical memory includes a support and nanoparticles, each of which changes between a crystal phase and an amorphous phase when irradiated with light. The nanoparticles are supported by the support and spaced apart from each other in one or both of an in-plane direction of a face of the support and a direction normal to the face of the support.

公开(公告)号：US20230359880A1

公开(公告)日：2023-11-09

申请号：US17634403

申请日：2021-06-15

申请人： FUJIKURA LTD.

发明人： Hiroyuki Kusaka ,  Masahiro Kashiwagi ,  Yuichiro Kunai

IPC分类号： G06N3/067

CPC分类号： G06N3/0675

摘要： An optical computing device includes: an optical modulation element including cells with independently configurable amounts of modulation; and a reflector. The optical modulation element is configured with N (N is a natural number not less than 2)-computing regions A1, A2, . . . , AN. The computing region A1 performs optical computing by modulating and reflecting incident light. Each computing region Ai (i is a corresponding natural number not less than 2 and not more than N) other than the computing region A1 performs the optical computing by modulating and reflecting signal light that has been modulated and reflected by a computing region Ai−1 and then reflected by the reflector.

公开(公告)号：US20180306470A1

公开(公告)日：2018-10-25

申请号：US15735632

申请日：2016-06-17

申请人： Fujikura Ltd.

发明人： Masahiro Kondo ,  Kohki Ishikawa ,  Kota Ueno

IPC分类号： F25B21/00 ,  F28F1/40 ,  B29C47/02 ,  F28F21/00

CPC分类号： F25B21/00 ,  B29C47/021 ,  B29L2031/18 ,  F25B2321/002 ,  F28F1/405 ,  F28F21/00 ,  F28F2255/16

摘要： An MCM heat exchanger 10 to be used in a magnetic heat pump device 1 comprises: an assembly 11 formed by bundling wires 12; and a cover layer 13 covering the assembly 11, each of the wires 12 is composed of a magnetocaloric material having a magnetocaloric effect, and the cover layer 13 includes: a tubular portion 14 surrounding the periphery of the assembly 11; and a filling portion 15 filling a gap between the outer periphery of the assembly 11 and the tubular portion 14.

公开(公告)号：US20230417963A1

公开(公告)日：2023-12-28

申请号：US18039194

申请日：2021-08-18

申请人： Fujikura Ltd.

发明人： Hiroyuki Yamagishi

IPC分类号： G02B5/18 ,  G06E1/00 ,  B29C64/124 ,  B33Y80/00 ,  B33Y10/00 ,  B29C64/277

CPC分类号： G02B5/1847 ,  G06E1/00 ,  B29C64/124 ,  B33Y80/00 ,  B33Y10/00 ,  B29C64/277 ,  B29L2011/00

摘要： A method is provided for manufacturing an optical computing device using a container that includes n side walls WS1 to WSn and n bottom walls WB1 to WBn made of an optically-transparent material, where n is a natural number of not less than 2. The method includes: forming the container including an i-th cavity Ci, using at least an i-th bottom wall WBi and an i-th side wall WSi, where i is an integer of 1≤i≤n; filling the cavity Ci with a liquid material Ri containing a photo-curable resin; and forming a light diffraction element on one main surface of the bottom wall WBi through stereolithography by emitting light to a part near an interface between the bottom wall WBi and the liquid material Ri to cure the photo-curable resin.

公开(公告)号：US20240329348A1

公开(公告)日：2024-10-03

申请号：US18580021

申请日：2022-04-19

申请人： Fujikura Ltd.

发明人： Shogo Shimizu ,  Soichiro Kaneko ,  Akira Namazue ,  Ken Osato

IPC分类号： G02B6/44

CPC分类号： G02B6/4433 ,  G02B6/449

摘要： An optical cable includes optical fiber units each including a bundle of optical fibers. The optical fiber units are twisted together in an S-Z configuration in which a twisting direction of the optical fiber units is reversed at a reversal part and an adjacent reversal part adjacent to the reversal part. A twisting angle, by which the optical fiber units are twisted in a circumferential direction between the reversal part and the adjacent reversal part, is 540 degrees or greater.

公开(公告)号：US12107379B2

公开(公告)日：2024-10-01

申请号：US17422267

申请日：2020-02-27

申请人： Fujikura Ltd.

发明人： Shinichi Sakamoto ,  Yasuto Chiba ,  Wataru Kiyoyama ,  Yutaka Yamaguchi ,  Takashi Hasunuma

IPC分类号： H01S3/094 ,  B23K26/70 ,  H01S3/00 ,  H01S3/067

CPC分类号： H01S3/094053 ,  B23K26/705 ,  H01S3/0014 ,  H01S3/005 ,  H01S3/06708

摘要： A laser device includes at least one light source; a delivery fiber that is configured to propagate of laser light emitted from the light source; and a first light detection unit and a second light detection unit configured to detect a part of light propagating in a direction opposite to a propagation direction of the laser light through the delivery fiber. The first light detection unit detects first light included in a wavelength band of visible light. The second light detection unit detects second light included in a wavelength band of near-infrared light.

公开(公告)号：US20240319463A1

公开(公告)日：2024-09-26

申请号：US18578638

申请日：2022-04-25

申请人： Fujikura Ltd.

发明人： Noriaki Yamashita ,  Itaru Ishida ,  Ken Osato

IPC分类号： G02B6/44

CPC分类号： G02B6/4403

摘要： An optical fiber ribbon includes five or more optical fibers disposed in a disposition direction perpendicular to a longitudinal direction of the optical fiber ribbon and connection parts disposed intermittently in the longitudinal and disposition directions. Each of the connection parts is disposed between and connects adjacent ones of the optical fibers. The optical fiber ribbon has a first high-density region and a first low-density region disposed at different positions in the longitudinal direction and a second high-density region and a second low-density region disposed at different positions in the longitudinal direction. At least two of the connection parts having different positions from each other in the longitudinal and disposition directions are disposed in the first high-density region. At least another two of the connection parts having different positions from each other in the longitudinal and disposition directions are disposed in the second high-density region.

公开(公告)号：US12095435B2

公开(公告)日：2024-09-17

申请号：US18101306

申请日：2023-01-25

申请人： Fujikura Ltd.

发明人： Masayuki Yoshiyama

IPC分类号： H03H11/24

CPC分类号： H03H11/24

摘要： A high frequency variable attenuation circuit includes an input terminal, an output terminal, a first resistor, a second resistor, a third resistor, and a first switching circuit. The first switching circuit has an output side resistor and an output side switching element that are connected in series to each other. The first switching circuit has a first circuit end connected to the second end of the second resistor and the output terminal, and a second circuit end connected to the ground.

公开(公告)号：US12092859B2

公开(公告)日：2024-09-17

申请号：US17757960

申请日：2020-12-16

申请人： Fujikura Ltd.

发明人： Katsuhiro Takenaga ,  Yusuke Sasaki ,  Masaki Ohzeki

IPC分类号： G02B6/02 ,  G02B6/38 ,  G02B6/44

CPC分类号： G02B6/02042 ,  G02B6/3885 ,  G02B6/3833 ,  G02B6/4433

摘要： A multicore fiber includes: a cladding; and three or more and five or less cores disposed at rotationally asymmetric positions on a circumference centered at a center of the cladding. No core is disposed at the center of the cladding. Angles formed by adjacent ones of lines connecting the center of the cladding and respective ones of the cores are all larger than 60°.

公开(公告)号：US20240288649A1

公开(公告)日：2024-08-29

申请号：US18269461

申请日：2021-11-12

申请人： Fujikura Ltd.

发明人： Hiroyuki Takamizawa ,  Toshiaki Nakajima ,  Tomoyuki Shinoda

IPC分类号： G02B6/44

CPC分类号： G02B6/44515

摘要： An optical termination box includes a housing, a module case slidably attached in a front-rear direction with respect to the housing, a front adapter fixed to a front end of the module case, an adapter holder disposed on a rear end side of the module case, a rear adapter fixed to the adapter holder, and an optical fiber that connects the front adapter to the rear adapter. The adapter holder is fixed to a rear end portion of the housing such that the rear adapter is exposed rearward of the housing.