公开(公告)号：US12044885B2

公开(公告)日：2024-07-23

申请号：US17908447

申请日：2020-05-18

申请人： Fujikura Ltd.

发明人： Keisuke Nishiguchi ,  Ririka Seino

IPC分类号： G02B6/255

CPC分类号： G02B6/2555 ,  G02B6/2551 ,  G02B6/2553

摘要： A jig for a fusion splicer mountable on a heater of the fusion splicer includes: a plate part configured to face a heating part of the heater; a first retainer, configured to face a first clamp of the fusion splicer that is disposed outside of the heating part along a longitudinal direction of an object to be heated, and further configured to retain a first member extending from a first end of the object along the longitudinal direction; and a second retainer, configured to face a second clamp disposed on a side of the heating part opposite to the first clamp along the longitudinal direction, and further configured to retain a second member extending from a second end of the object along the longitudinal direction.

公开(公告)号：US20240209731A1

公开(公告)日：2024-06-27

申请号：US18088686

申请日：2022-12-26

申请人： Weatherford Technology Holdings, LLC

发明人： Jason S. Kiddy ,  Edward M. Dowd ,  Hongbo Li

IPC分类号： E21B47/135 ,  G02B6/255 ,  G02B6/44

CPC分类号： E21B47/135 ,  G02B6/2551 ,  G02B6/4433 ,  E21B47/06

摘要： A fiber optic cable conducts optical fiber to downhole gauges in a wellbore. Cable connections are used to protect splicing of the optical fiber between cable sections and the gauges. The cable connection includes adjoining tubes, which have passages for the optical fiber. The tubes are nested together and enclose the splicing of the optical fiber. A cable-end tube is affixed to a section of the cable with the passage overlaying a jacket of the cable, and a gauge-end tube is affixed to an end of the downhole gauge with the passage overlaying the end of the downhole gauge. At least one spanning tube has ends that are affixed nested inside the passages of the adjoining ones of the tubes. The cable connections allow the cable and gauges to be wound on a spool or reel for installing into the wellbore.

公开(公告)号：US20230417994A1

公开(公告)日：2023-12-28

申请号：US18327927

申请日：2023-06-02

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

发明人： Shintaro MOURI ,  Soichi ENDO ,  Akinori KIMURA

IPC分类号： G02B6/255 ,  G02B6/26

CPC分类号： G02B6/2553 ,  G02B6/2551 ,  G02B6/2556 ,  G02B6/262

摘要： The fusion splicer includes a first holding unit, a second holding unit, a screen, a first measurement device, a first driving unit, a second driving unit, and a third driving unit. The screen has a light guide portion through which only test light emitted from one of the plurality of cores of the first optical fiber can pass. The screen is disposed between the end face of the first optical fiber and the end face of the second optical fiber. The first measurement device measures the intensity of leakage light leaking from the second optical fiber. The third driving unit adjusts the position of the screen such that the light guide portion is aligned with one of the plurality of cores of the first optical fiber in the axial direction of the first optical fiber.

公开(公告)号：US11811186B2

公开(公告)日：2023-11-07

申请号：US17222849

申请日：2021-04-05

申请人： NLIGHT, INC.

发明人： Roger L. Farrow ,  Dahv A. V. Kliner

IPC分类号： H01S3/067 ,  G02B6/255 ,  G02B6/42 ,  G02B6/26

CPC分类号： H01S3/0675 ,  G02B6/2551 ,  G02B6/264 ,  G02B6/4296 ,  H01S3/06754

摘要： An apparatus includes an optical gain fiber having a core, a cladding surrounding the core, the core and cladding defining an optical gain fiber numerical aperture, and a multimode fiber having a core with a larger radius than a radius of the optical gain fiber core, a cladding surrounding the core, the core and cladding of the multimode fiber defining a multimode fiber stable numerical aperture that is larger than the optical gain fiber numerical aperture, the multimode fiber being optically coupled to the optical gain fiber so as to receive an optical beam propagating in the optical gain fiber and to stably propagate the received optical beam in the multimode fiber core with low optical loss associated with the optical coupling.

公开(公告)号：US11808982B2

公开(公告)日：2023-11-07

申请号：US17629569

申请日：2020-06-22

申请人： FUJIKURA LTD.

发明人： Ryokichi Matsumoto

IPC分类号： G02B6/255 ,  G02B6/04 ,  G02B6/287 ,  G02B27/10

CPC分类号： G02B6/2551 ,  G02B6/04 ,  G02B6/287 ,  G02B27/1006

摘要： An optical combiner includes: an optical fiber bundle formed by a plurality of first optical fibers; and a second optical fiber including an end surface joined to an end surface of the optical fiber bundle by fusion-splicing. The plurality of first optical fibers includes a predetermined first optical fiber and other first optical fibers. The predetermined first optical fiber is composed of one or more materials having higher softening temperatures than one or more materials of the other first optical fibers.

公开(公告)号：US11808981B2

公开(公告)日：2023-11-07

申请号：US17258091

申请日：2019-07-04

申请人： O'FIBERTY TECHNOLOGIES INC.

发明人： François Gonthier

IPC分类号： G02B6/255

CPC分类号： G02B6/2551 ,  G02B6/2553

摘要： Laser light splicing of optical fibers with laser light outside of the peak absorption band of the optical fibers, for example splicing of silica optical fibers at wavelengths smaller than about 9 μm. In some variants, the product of the absorption coefficient at ambient temperature of the optical fibers at the wavelength of the laser light with the power of the laser light is smaller than the product of the peak absorption coefficient at ambient temperature in the absorption band by the power required to splice the optical fibers with light at the peak absorption.

公开(公告)号：US20230341625A1

公开(公告)日：2023-10-26

申请号：US17908447

申请日：2020-05-18

申请人： Fujikura Ltd.

发明人： Keisuke Nishiguchi ,  Ririka Seino

IPC分类号： G02B6/255

CPC分类号： G02B6/2555 ,  G02B6/2553 ,  G02B6/2551

摘要： A jig for a fusion splicer mountable on a heater of the fusion splicer includes: a plate part configured to face a heating part of the heater; a first retainer, configured to face a first clamp of the fusion splicer that is disposed outside of the heating part along a longitudinal direction of an object to be heated, and further configured to retain a first member extending from a first end of the object along the longitudinal direction; and a second retainer, configured to face a second clamp disposed on a side of the heating part opposite to the first clamp along the longitudinal direction, and further configured to retain a second member extending from a second end of the object along the longitudinal direction.

公开(公告)号：US20190041574A1

公开(公告)日：2019-02-07

申请号：US16154779

申请日：2018-10-09

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

发明人： Takemi HASEGAWA ,  Tetsuya HAYASHI ,  Yoshiaki TAMURA

IPC分类号： G02B6/02 ,  G02B6/38

CPC分类号： G02B6/02042 ,  G02B6/2551 ,  G02B6/2552 ,  G02B6/262 ,  G02B6/3885

摘要： The present embodiment relates to a CC-MCF capable of generating sufficient mode coupling even with bending or twisting less. The CC-MCF includes two fiber parts having cores mutually directly or indirectly connected, each fiber part having a plurality of cores in which a pair of adjacent cores has a mode-coupling coefficient of 1 (1/m) or more. Each fiber part is provided with a transition section including a fiber end face and a stationary section adjacent to the transition section. In the stationary section, the MFD of each core is substantially constant in a fiber longitudinal direction, and in the transition section, the MFD of each core is continuously expanding from the stationary section to the fiber end face.

公开(公告)号：US20180299619A1

公开(公告)日：2018-10-18

申请号：US15732440

申请日：2017-11-13

申请人： Yong Huang

发明人： Yong Huang

IPC分类号： G02B6/255 ,  G02B6/25

CPC分类号： G02B6/2555 ,  G02B6/25 ,  G02B6/2551 ,  G02B6/2553

摘要： Embodiments of present invention provide a method of splicing optical fibers. The method includes holding a first and a second fiber respectively by a first and a second rotary clamp; aligning axes of the first and second fibers to a common reference; moving the first and second fibers that are being held by the first and second rotary clamps onto a splicing machine; and causing the first and second fibers being spliced together by the splicing machine. A fiber splicing apparatus or system is also provided for performing the method thereof.

公开(公告)号：US10078181B2

公开(公告)日：2018-09-18

申请号：US15341646

申请日：2016-11-02

申请人： Triad Technology, Inc.

发明人： Archie T Brown ,  Frederick T Brown

IPC分类号： G02B6/02 ,  G02B6/255 ,  G02B6/32 ,  G01N21/11 ,  G01N21/31

CPC分类号： G02B6/02328 ,  G01N21/11 ,  G01N21/31 ,  G02B6/02347 ,  G02B6/2551 ,  G02B6/32 ,  G02B6/3652

摘要： A robust, rugged, and small hybrid fiber for use in reference chambers was created using a Hollow-Core Photonic Bandgap Fiber (HCPBF). The hybrid fiber and associated chamber apparatus is amenable to mass production and can be used for wavelengths of light from 400 nm to 2000 nm. The apparatus and method of making thereof is described herein.