公开(公告)号：US20180356589A1

公开(公告)日：2018-12-13

申请号：US16104220

申请日：2018-08-17

申请人： FURUKAWA ELECTRIC CO., LTD.

发明人： Kazunori MUKASA ,  Yukihiro TSUCHIDA

IPC分类号： G02B6/02 ,  C03B37/012 ,  C03B37/027 ,  G02B6/032

CPC分类号： G02B6/02361 ,  C03B37/012 ,  C03B37/01211 ,  C03B37/027 ,  C03B37/02781 ,  C03B2203/14 ,  C03B2203/22 ,  G02B6/02 ,  G02B6/032 ,  G02B6/036

摘要： An optical fiber that has an air layer in a clad portion and can suppress a degradation in a transmission characteristic caused by a support member present in the air layer is provided. The optical fiber includes a core (1), tubular layers (22 to 25) concentrically arranged around the core (1) via the air layer, and support members (3a to 3l) that are arranged to the air layer and connect the core (1) with the tubular layers (22 to 25), and in the optical fiber, in a cross-sectional view of a longitudinal direction of the optical fiber, a distance between support members (3a to 3l) in a circumferential direction of the optical fiber is wider than a double thickness of the air layer in which the support members (3a to 3l) are arranged.

公开(公告)号：US20180044234A1

公开(公告)日：2018-02-15

申请号：US15789214

申请日：2017-10-20

申请人： Adam Hokansson ,  David J. Kudelko ,  Yaowen Li ,  Joanna Y. Ng ,  Debra A. Simoff

发明人： Adam Hokansson ,  David J. Kudelko ,  Yaowen Li ,  Joanna Y. Ng ,  Debra A. Simoff

IPC分类号： C03C25/10 ,  C03B37/027

CPC分类号： C03C25/1062 ,  B23K26/359 ,  B23K26/364 ,  B23K26/50 ,  C03B37/027 ,  C03B2201/21 ,  C03B2201/22 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2205/20 ,  C03C25/106 ,  C03C25/6208 ,  C03C2218/152 ,  G02B6/02114 ,  G02B6/02138 ,  G02B6/02395 ,  G02B2006/02161

摘要： A technique is described for fabricating one or more optical devices in a carbon-coated optical fiber. A photosensitive optical fiber is provided having a hermetic carbon coating. Further provided is a laser having a beam output that is configured to inscribe one or more refractive index modulations into the optical fiber through the hermetic carbon layer while leaving the hermetic carbon layer intact. The laser is used to inscribe one or more optical devices into the optical fiber through the hermetic carbon layer.

公开(公告)号：US09846275B2

公开(公告)日：2017-12-19

申请号：US14862648

申请日：2015-09-23

申请人： Corning Incorporated

发明人： Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Michal Mlejnek ,  William Allen Wood ,  Aramais Robert Zakharian

IPC分类号： H04B10/12 ,  G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  H04B10/2581 ,  H04B10/2543

CPC分类号： G02B6/02019 ,  C03B2201/12 ,  C03B2201/50 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/24 ,  G02B6/02023 ,  G02B6/02309 ,  G02B6/0281 ,  G02B6/0288 ,  G02B6/03622 ,  G02B6/03638 ,  G02B6/0365 ,  H04B10/2543 ,  H04B10/2581

摘要： A quasi-single-mode optical fiber with a large effective area is disclosed. The quasi-single-mode fiber has a core with a radius greater than 5 μm, and a cladding section configured to support a fundamental mode and a higher-order mode. The fundamental mode has an effective area greater than 170 μm2 and an attenuation of no greater than 0.17 dB/km at a wavelength of 1530 nm. The higher-order mode has an attenuation of at least 1.0 dB/km at the wavelength of 1530 nm. The quasi-single-mode optical fiber has a bending loss of less than 0.02 dB/turn for a bend diameter of 60 mm for a wavelength of 1625 nm.

公开(公告)号：US20170305781A1

公开(公告)日：2017-10-26

申请号：US15645303

申请日：2017-07-10

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

发明人： Tetsuya HARUNA ,  Yoshiaki TAMURA ,  Yoshihiro TUKUDA

IPC分类号： C03C3/06 ,  C03C25/68 ,  C03B37/014 ,  C03B37/018 ,  G02B6/036

CPC分类号： G02B6/03694 ,  C03B37/01446 ,  C03B37/01466 ,  C03B37/01473 ,  C03B37/018 ,  C03B2203/22 ,  C03C3/06 ,  C03C13/045 ,  C03C17/02 ,  C03C25/68 ,  C03C2201/50

摘要： One of embodiments relates to an optical fiber in which an alkali metal element is efficiently doped to its core to suppress transmission loss from increasing. A mean concentration or a concentration distribution of the alkali metal element is adjusted such that 0.48 or less is obtained as an weighted value obtained by weighting a distribution of field intensity of guided light at a wavelength of 1550 nm, with respect to a radial direction distribution of a ratio ID2/Iω3 of an intensity ID2 of Raman scattering light by a silica three-membered ring structure and an intensity Iω3 of Raman scattering light by a Si—O stretching vibration, in a cross-sectional region having a diameter of 20 μm.

公开(公告)号：US09676658B2

公开(公告)日：2017-06-13

申请号：US14997780

申请日：2016-02-15

申请人： Corning Incorporated

发明人： Brian Lee Harper ,  Rostislav Radiyevich Khrapko ,  Snigdharaj Kumar Mishra ,  Sonya Marie Raney ,  Pushkar Tandon

IPC分类号： C03C13/04 ,  C03B37/014

CPC分类号： C03B37/01446 ,  C03B37/014 ,  C03B37/01453 ,  C03B2201/08 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/26 ,  C03C13/045 ,  C03C2201/11 ,  C03C2201/20

摘要： One embodiment of the disclosure relates to a method of making an optical fiber comprising the steps of: (i) exposing a silica based preform with at least one porous glass region having soot density of ρ to a gas mixture comprising SiCl4 having SiCl4 mole fraction ySiCl4 at a doping temperature Tdop such that parameter X is larger than 0.03 to form the chlorine treated preform, wherein X = 1 1 + [ ( ρ ρ s - ρ ) ⁢ 0.209748 ⁢ ⁢ T dop ⁢ Exp ⁡ [ - 5435.33 / T dop ] y SiCl ⁢ ⁢ 4 3 / 4 ] and ρs is the density of the fully densified soot layer; and (ii) exposing the chlorine treated preform to temperatures above 1400° C. to completely sinter the preform to produce sintered optical fiber preform with a chlorine doped region; and (iii) drawing an optical fiber from the sintered optical preform.

公开(公告)号：US20170160466A1

公开(公告)日：2017-06-08

申请号：US15440228

申请日：2017-02-23

申请人： FURUKAWA ELECTRIC CO., LTD. ,  NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Katsunori IMAMURA ,  Tomohiro GONDA ,  Ryuichi SUGIZAKI ,  Taiji SAKAMOTO ,  Takayoshi MORI ,  Masaki WADA ,  Takashi YAMAMOTO ,  Fumihiko YAMAMOTO

IPC分类号： G02B6/02 ,  C03B37/16 ,  C03B37/012 ,  G02B6/028

CPC分类号： G02B6/02042 ,  C03B37/01205 ,  C03B37/01222 ,  C03B37/027 ,  C03B37/16 ,  C03B2203/10 ,  C03B2203/18 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/26 ,  C03B2203/34 ,  C03B2205/30 ,  G02B6/0288 ,  G02B6/0365

摘要： A multicore fiber includes a plurality of unit multicore fibers each including: a plurality of core portions; and a clad portion which is formed in an outer circumference of the core portions and has a refractive index lower than a maximum refractive index of the core portions. The plurality of the core portions have substantially same refractive index profile and different group delays at same wavelength in same propagation mode. The core portions of the multicore fiber are configured so that the core portions of the plurality of the unit multicore fibers are connected in cascade, a maximum value of differential group delays between the core portions of the multicore fiber is smaller than a reduced value of a maximum value of differential group delays between the core portions of each unit multicore fiber as a value in terms of a length of the multicore fiber.

公开(公告)号：US20170075060A1

公开(公告)日：2017-03-16

申请号：US15363154

申请日：2016-11-29

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

发明人： Yuki KAWAGUCHI ,  Yoshinori YAMAMOTO ,  Masaaki HIRANO

IPC分类号： G02B6/02 ,  G02B6/036

CPC分类号： G02B6/02019 ,  C03B2203/22 ,  C03B2203/23 ,  G02B6/036 ,  G02B6/03611 ,  G02B6/03627 ,  G02B6/03633

摘要： Provided is an optical fiber having W-shaped refractive-index distribution and in which a micro-bend loss in an actual usage waveband is reduced. The optical fiber includes a core, inner cladding that surrounds the core and has a refractive index smaller than a refractive index of the core, and outer cladding that surrounds the inner cladding and has a refractive index smaller than the refractive index of the core and larger than the refractive index of the inner cladding. When a coupling coefficient between a fundamental mode and a cladding mode is denoted by C01-CL, a coupling coefficient between the fundamental mode and a higher-order mode is denoted by C01-11, and a coupling coefficient between the higher-order mode and the cladding mode is denoted by C11-CL, Ctotal defined as Ctotal=C01-CL+C01-11C11-CL has a minimum value at a wavelength ranging between 1520 nm and 1630 nm.

摘要翻译： 提供了具有W形折射率分布并且实际使用波段中的微弯曲损耗减小的光纤。 光纤包括芯，围绕芯并且具有小于芯的折射率的折射率的内包层和围绕内包层并具有小于芯的折射率的折射率的较大的外包层 比内包层的折射率高。 当基模和包层模式之间的耦合系数由C01-CL表示时，基模和高阶模之间的耦合系数由C01-11表示，高阶模和 包层模式由C11-CL表示，Ctotal定义为Ctotal = C01-CL + C01-11C11-CL在1520nm和1630nm之间的波长范围内具有最小值。

公开(公告)号：US09522838B2

公开(公告)日：2016-12-20

申请号：US14709506

申请日：2015-05-12

申请人： Zhongtian Technology Advanced Materials Co., Ltd.

发明人： Xinli Jiang ,  Xikai Xu ,  Jinwen Chen ,  Hui Zhou ,  Benhua Qian

IPC分类号： C03B37/012 ,  C03C25/68 ,  C03C23/00

CPC分类号： C03B37/01211 ,  C03B37/01248 ,  C03B37/01257 ,  C03B37/0126 ,  C03B2203/22 ,  C03B2203/23 ,  C03C23/0075 ,  C03C25/68

摘要： An apparatus and a method for producing a depressed-cladding core rod of an ultra-low water peak optical fiber, the apparatus including a core rod component, an inner cladding casing component, a high temperature heat source, chucks, a rotary joint, an external gas pipe, and a pressure controlling pipe. The core rod component is produced by fusing and splicing a core layer rod and a first hollow shaft together. The inner cladding casing covers the outside of the core layer rod. The inner cladding casing component is produced by fusing and splicing an inner cladding casing and a second hollow shaft together. These two hollow shafts are clamped in two chucks of a glass lathe. A high temperature heat source is arranged outside the inner cladding casing.

摘要翻译： 一种用于制造超低水峰值光纤的凹陷包芯棒的设备和方法，该设备包括芯棒部件，内包壳部件，高温热源，卡盘，旋转接头， 外部气体管道和压力控制管道。 芯棒部件通过将芯层棒和第一空心轴熔合并拼接在一起而制成。 内包壳覆盖芯层棒的外侧。 内包层壳体部件通过将内包层壳体和第二空心轴熔接并拼接而制成。 这两个空心轴夹在玻璃车床的两个卡盘中。 高温热源布置在内包层外侧。

公开(公告)号：US09400352B2

公开(公告)日：2016-07-26

申请号：US14628450

申请日：2015-02-23

申请人： FUJIKURA LTD.

发明人： Kazuyuki Hayashi ,  Katsuaki Izoe

IPC分类号： G02B6/02 ,  G02B6/028 ,  G02B6/024 ,  G02B6/036

CPC分类号： G02B6/024 ,  C03B2203/22 ,  C03B2203/30 ,  G02B6/0365

摘要： A polarization-maintaining optical fiber of the invention includes: a core; a pair of stress-applying parts disposed at both sides of the core at a distance; and a cladding coat that surrounds the core and the paired stress-applying parts. The maximum refractive index of the core is greater than each of maximum refractive indexes of a first cladding coat, a second cladding coat, and a third cladding coat. The maximum refractive index of the second cladding coat is lower than each of maximum refractive indexes of the first cladding coat and the third cladding coat. The coefficient of thermal expansion of each of stress-applying parts is greater than a coefficient of thermal expansion of the cladding coat. Each stress-applying part is provided to cut the second cladding coat at a position in a circumferential direction.

摘要翻译： 本发明的偏振保持光纤包括：芯; 一对应力部件设置在芯部的两侧一段距离; 以及围绕芯部和成对的应力施加部件的包层涂层。 芯的最大折射率大于第一包覆层，第二覆层和第三覆层的最大折射率。 第二包覆层的最大折射率低于第一包覆层和第三覆层的最大折射率。 每个应力施加部件的热膨胀系数大于包覆层的热膨胀系数。 每个应力施加部分被设置成在圆周方向上的位置处切割第二包覆层。

公开(公告)号：US20160170137A1

公开(公告)日：2016-06-16

申请号：US14938914

申请日：2015-11-12

申请人： OFS Fitel, LLC

发明人： Peter I. Borel ,  Rasmus V.S. Jensen ,  Ole A. Levring ,  Jorgen Ostgaard Olsen ,  David W. Peckham ,  Dennis J. Trevor ,  Patrick W. Wisk ,  Man F. Yan

IPC分类号： G02B6/036 ,  G02B6/02

CPC分类号： G02B6/0365 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/01853 ,  C03B37/01861 ,  C03B37/01869 ,  C03B37/01892 ,  C03B37/027 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2203/22 ,  C03B2203/222 ,  C03B2203/223 ,  C03B2205/40 ,  C03B2205/42 ,  C03C13/045 ,  C03C2201/11 ,  C03C2201/12 ,  C03C2203/44 ,  C03C2203/46 ,  G02B6/02019 ,  G02B6/03683 ,  G02B6/03694 ,  Y02P40/57

摘要： The core region of an optical fiber is doped with chlorine in a concentration that allows for the viscosity of the core region to be lowered, approaching the viscosity of the surrounding cladding. An annular interface region is disposed between the core and cladding and contains a concentration of fluorine dopant sufficient to match the viscosity of the core. By including this annular stress accommodation region, the cladding layer can be formed to include the relatively high concentration of fluorine required to provide the desired degree of optical signal confinement (i.e., forming a “low loss” optical fiber). The inclusion of the annular stress accommodation region allows for the formation of a large effective area optical fiber that exhibits low loss (i.e.,

摘要翻译： 光纤的核心区域掺杂有氯，其浓度允许芯区的粘度降低，接近周围包层的粘度。 在芯和包层之间设置环形界面区域，并且包含足以匹配芯的粘度的氟掺杂剂的浓度。 通过包括该环形应力容纳区域，可以形成包层，以包括提供期望程度的光信号限制所需的相对高浓度的氟（即，形成“低损耗”光纤）。 包含环形应力容纳区域允许形成在C波段和L波段传输范围内呈现低损耗（即<0.19dB / km）的大的有效面积光纤。