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1. 发明授权

US10627573B2 Optical device, laser system, and method for manufacturing optical device 有权
公开(公告)号：US10627573B2
公开(公告)日：2020-04-21
申请号：US16306953
申请日：2017-03-06
申请人： FUJIKURA LTD.
发明人： Tomoyuki Fujita
IPC分类号： G02B6/26 , G02B6/28 , G02B6/04 , G02B6/42 , G02B6/287 , H01S3/067 , G02B6/028 , H01S3/094 , H01S3/0941 , H01S3/23
CPC分类号： G02B6/262 , G02B6/028 , G02B6/04 , G02B6/26 , G02B6/28 , G02B6/287 , G02B6/42 , G02B6/4202 , H01S3/067 , H01S3/0675 , H01S3/09415 , H01S3/094003 , H01S3/2383
摘要： Provided is an optical device which can control a beam quality of outgoing light. An optical device (10) includes an entrance fiber bundle (12), an exit fiber (13), and a reduced diameter part (11). The reduced diameter part (11) has (i) an entrance end surface (11a) and (ii) an exit end surface (11b) which is narrower in area than the entrance end surface (11a). In a case where the entrance end surface (11a) is viewed from a normal direction of the entrance end surface (11a), a center (C2) of the exit end surface (11b) deviates from a center (C1) of the entrance end surface (11a).

2. 发明授权

US10073220B2 Optical coupler, laser device, and taper fiber 有权
公开(公告)号：US10073220B2
公开(公告)日：2018-09-11
申请号：US15451010
申请日：2017-03-06
申请人： FUJIKURA LTD.
发明人： Tomoyuki Fujita , Kentaro Ichii , Ken Katagiri , Kenichi Ohmori , Rintaro Kitahara , Tatsuya Kishi
IPC分类号： G02B6/26 , G02B6/28 , G02B27/09 , G02B6/255 , G02B6/036
CPC分类号： G02B6/26 , G02B6/02 , G02B6/02042 , G02B6/028 , G02B6/036 , G02B6/03605 , G02B6/03611 , G02B6/2552 , G02B6/262 , G02B6/28 , G02B6/2804 , G02B6/287 , G02B27/0994 , H01S3/067 , H01S3/06745
摘要： Provided is an optical coupler configured to cause an NA of light, which exits a taper fiber, to be smaller as compared with a conventional optical coupler. A taper fiber has a high refractive index part which is provided inside a core of the taper fiber and which has a refractive index smaller than a refractive index ncore of the core. An exit end surface of each GI fiber is bonded to an entrance end surface of the taper fiber so that at least a part of the exit end surface of the each GI fiber overlaps with a section of the high refractive index part. A relative refractive index difference of the taper fiber is smaller than 0.076%.

3. 发明申请

US20170235055A1 OPTICAL COUPLER, LASER DEVICE, AND TAPER FIBER 审中-公开
公开(公告)号：US20170235055A1
公开(公告)日：2017-08-17
申请号：US15451010
申请日：2017-03-06
申请人： FUJIKURA LTD.
发明人： Tomoyuki Fujita , Kentaro Ichii , Ken Katagiri , Kenichi Ohmori , Rintaro Kitahara , Tatsuya Kishi
IPC分类号： G02B6/28 , G02B27/09 , G02B6/26
CPC分类号： G02B6/26 , G02B6/02 , G02B6/02042 , G02B6/028 , G02B6/036 , G02B6/03605 , G02B6/03611 , G02B6/2552 , G02B6/262 , G02B6/28 , G02B6/2804 , G02B6/287 , G02B27/0994 , H01S3/067 , H01S3/06745
摘要： Provided is an optical coupler configured to cause an NA of light, which exits a taper fiber, to be smaller as compared with a conventional optical coupler. A taper fiber has a high refractive index part which is provided inside a core of the taper fiber and which has a refractive index smaller than a refractive index ncore of the core. An exit end surface of each GI fiber is bonded to an entrance end surface of the taper fiber so that at least a part of the exit end surface of the each GI fiber overlaps with a section of the high refractive index part. A relative refractive index difference of the taper fiber is smaller than 0.076%.

4. 发明授权

US11808982B2 Optical combiner, laser device, and method for manufacturing optical combiner 有权
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.

5. 发明申请

US20160187577A1 MULTICORE FIBER 有权
标题翻译：多光纤
公开(公告)号：US20160187577A1
公开(公告)日：2016-06-30
申请号：US15062582
申请日：2016-03-07
申请人： FUJIKURA LTD. , NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
发明人： Yusuke Sasaki , Hitoshi Uemura , Katsuhiro Takenaga , Kunimasa Saitoh
IPC分类号： G02B6/02 , G02B6/028 , G02B6/26
CPC分类号： G02B6/02042 , G02B6/0288 , G02B6/14 , G02B6/268 , G02B6/287 , G02B2006/2839
摘要： A multicore fiber 1 includes: a small diameter portion 33 in which a propagation constant of light of an x1-th order LP mode of the first core 11 (here, x1 is an integer of “2” or more and x or less, x is an integer of “2” or more) and a propagation constant of light of a y1-th order LP mode of the second core 12 (here, y1 is an integer of “1” or more and y or less other than x1, y is an integer of “1” or more) coincide with each other and a large diameter portion in which a propagation constant of light of each LP mode of the first core 11 and a propagation constant of light of each LP mode of the second core 12 are configured not to coincide with each other are arranged.
摘要翻译：多芯光纤1包括：小直径部33，其中第一芯11的x1阶LP模的光的传播常数（这里，x1是“2”以上的整数，x以下的x，x 是“2”以上的整数），第2芯12的y1级LP模式的光的传播常数（这里，y1为除x1以外的y以下的整数，y为1以上的整数， y是“1”以上的整数）彼此一致，并且大直径部分，其中第一芯11的每个LP模式的光的传播常数和第二芯的每个LP模式的光的传播常数 12被配置为不相互重合。

6. 发明申请

US20100189391A1 MULTIMODE OPTICAL COMBINER AND PROCESS FOR PRODUCING THE SAME 审中-公开
标题翻译：多模光学组合器及其制造方法
公开(公告)号：US20100189391A1
公开(公告)日：2010-07-29
申请号：US11916190
申请日：2006-05-26
申请人： Shinichi Shimotsu
发明人： Shinichi Shimotsu
IPC分类号： G02B6/287 , B23P17/00
CPC分类号： G02B6/287 , Y10T29/49
摘要： A multimode optical combiner constituted by first and second multimode optical waveguides. The first multimode optical waveguide includes optical waveguide portions and a near-end portion having a single core and an output end. The optical waveguide portions are arranged in a bundle so that none of the at least six optical waveguide portions is located in the center of the bundle. The second multimode optical waveguide has an input end connected to the output end of the first multimode optical waveguide. The numerical aperture NAinput and the core diameter Dinput of the first multimode optical waveguide at the output end and the numerical aperture NAoutput and the core diameter Doutput of the second multimode optical waveguide at the input end satisfy the relationship, NAinput×Dinput NAoutput×Doutput.
摘要翻译：一种由第一和第二多模光波导构成的多模光合并器。第一多模光波导包括光波导部分和具有单个核心和输出端的近端部分。光波导部分被布置成束，使得至少六个光波导部分中没有一个位于束的中心。第二多模光波导具有连接到第一多模光波导的输出端的输入端。输入端的第一多模光波导的数值孔径NA输入和芯径Dinput以及输入端第二多模光波导的数值孔径NA输出和芯径Doutput满足NAinput×Dinput NAoutput×Doutput的关系。

7. 发明申请

US20090148098A1 DEVICE FOR COUPLING RADIATION INTO OR OUT OF AN OPTICAL FIBRE 有权
标题翻译：用于将辐射耦合到或从光纤射出的装置
公开(公告)号：US20090148098A1
公开(公告)日：2009-06-11
申请号：US12341149
申请日：2008-12-22
申请人： Steffan Lewis , Glyn Edwards
发明人： Steffan Lewis , Glyn Edwards
IPC分类号： G02B6/24 , B32B37/00
CPC分类号： H01S3/094003 , G02B6/2804 , G02B6/287 , H01S3/094007 , H01S3/094019
摘要： A device for coupling multimode pump light and a laser signal into or out of a cladding-pumped fibre laser is disclosed, comprising an output optical fibre, a substantially un-tapered feed-through optical fibre, an annular waveguide having a tapered section, and a plurality of multimode pump fibres such that: the signal feed-through fibre is located within the annular waveguide; the signal feed-through fibre is fused into the annular waveguide in the tapered section so that the annular waveguide becomes an additional cladding layer of the feed-through fibre; the end of the feed-through fibre that is fused into the annular waveguide is optically coupled to the output optical fibre; the multimode pump fibres are optically coupled to the annular waveguide in the un-tapered section. Methods of forming the device are also disclosed.
摘要翻译：公开了一种用于将多模泵浦光和激光信号耦合到包层泵浦光纤激光器中的装置，包括输出光纤，基本上未锥形的馈通光纤，具有锥形部分的环形波导，以及多个多模泵浦光纤，使得：信号馈通光纤位于环形波导内; 信号馈通光纤熔接在锥形部分中的环形波导中，使得环形波导成为馈通光纤的附加包层; 融合到环形波导中的馈通光纤的端部光耦合到输出光纤; 多模泵浦光纤在非锥形部分中光耦合到环形波导。还公开了形成装置的方法。

8. 发明申请

US20180210241A1 RING WAVEGUIDE MODULATORS 审中-公开
公开(公告)号：US20180210241A1
公开(公告)日：2018-07-26
申请号：US15745712
申请日：2015-07-23
申请人： HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
发明人： Mir Ashkan SEYEDI , Chin-Hui CHEN
IPC分类号： G02F1/01 , G02F1/025
CPC分类号： G02F1/0147 , G02B6/287 , G02F1/025 , G02F2201/16 , G02F2201/17 , G02F2203/05 , G02F2203/15
摘要： In one example, a device includes a bus waveguide to carry a light of a carrier wavelength, a first ring waveguide with a first modulator, a first heater to adjust a resonance wavelength of the first ring waveguide, and a second ring waveguide with a second modulator. The first ring waveguide and the second ring waveguide are coupled to the bus waveguide and are to modulate the light of the carrier wavelength to impart one of at least four optical power levels to the light. In another example, a device includes, a bus waveguide, a first ring waveguide with a first modulator, and a second ring waveguide with a second modulator. The first ring waveguide and the second ring waveguide are coupled to the bus waveguide and are to modulate a light of a carrier wavelength to impart one of at least four optical power levels to the light.

9. 发明授权

US09709729B2 Multicore fiber with different-mode interaction section 有权
公开(公告)号：US09709729B2
公开(公告)日：2017-07-18
申请号：US15062582
申请日：2016-03-07
申请人： FUJIKURA LTD. , NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
发明人： Yusuke Sasaki , Hitoshi Uemura , Katsuhiro Takenaga , Kunimasa Saitoh
IPC分类号： G02B6/02 , G02B6/028 , G02B6/26 , G02B6/287 , G02B6/14 , G02B6/28
CPC分类号： G02B6/02042 , G02B6/0288 , G02B6/14 , G02B6/268 , G02B6/287 , G02B2006/2839
摘要： A multicore fiber 1 includes: a small diameter portion 33 in which a propagation constant of light of an x1-th order LP mode of the first core 11 (here, x1 is an integer of “2” or more and x or less, x is an integer of “2” or more) and a propagation constant of light of a y1-th order LP mode of the second core 12 (here, y1 is an integer of “1” or more and y or less other than x1, y is an integer of “1” or more) coincide with each other and a large diameter portion in which a propagation constant of light of each LP mode of the first core 11 and a propagation constant of light of each LP mode of the second core 12 are configured not to coincide with each other are arranged.

10. 发明申请

US20160285579A1 Optical Transmission Apparatus, Method, and Applications Thereof 审中-公开
标题翻译：光传输装置，方法及其应用
公开(公告)号：US20160285579A1
公开(公告)日：2016-09-29
申请号：US15078174
申请日：2016-03-23
申请人： UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
发明人： Guifang Li , He Wen
IPC分类号： H04J14/02 , H04J14/04 , H04B10/25
CPC分类号： H04J14/02 , G02B6/262 , G02B6/287 , H04B10/2504 , H04B10/2581 , H04J14/04
摘要： Analog and digital fiber-optic telecommunication links using high-order modes in few-mode fibers (FMFs) to improve the Spurious Free Dynamic Range (SFDR) and reduce wavelength division multiplexing (WDM) penalties due to fiber nonlinearities. Methods and applications.
摘要翻译：模拟和数字光纤通信链路，使用多模光纤（FMF）中的高阶模式，以改善无杂散动态范围（SFDR），并减少光纤非线性造成的波分复用（WDM）惩罚。方法和应用。

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