公开(公告)号：US20140010501A1

公开(公告)日：2014-01-09

申请号：US14021680

申请日：2013-09-09

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Tsunetoshi SAITO ,  Kengo WATANABE

IPC: G02B6/02

CPC classification number: G02B6/02042 ,  G02B6/2551 ,  G02B6/3885 ,  G02B6/403

Abstract: A multicore fiber has a plurality of cores formed at predetermined distances and surrounded by a cladding. A bundle structure includes optical fibers joined in a close-packed arrangement. Specifically, one optical fiber is arranged at a center, and six optical fibers are arranged around the optical fiber arranged at the center. Accordingly, cores of the optical fibers are arranged at equal distances. The optical fibers are bonded together with an adhesive. Accordingly, claddings of adjacent optical fibers are in contact with each other either directly or via the adhesive. The adhesive also fills spaces between the optical fibers.

Abstract translation: 多芯光纤具有以预定距离形成并被包层围绕的多个芯。 束结构包括以紧密堆积布置连接的光纤。 具体地说，一个光纤布置在中心，并且在布置在中心的光纤周围布置了六根光纤。 因此，光纤的芯部以相等的距离排列。 光纤用粘合剂粘合在一起。 因此，相邻光纤的包层直接或经由粘合剂彼此接触。 粘合剂还填充光纤之间的空间。

公开(公告)号：US20160347645A1

公开(公告)日：2016-12-01

申请号：US15231896

申请日：2016-08-09

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Tomohiro GONDA ,  Ryo MIYABE ,  Katsunori IMAMURA ,  Tsunetoshi SAITO ,  Ryuichi SUGIZAKI

IPC: C03B37/012 ,  C03B37/025

CPC classification number: C03B37/01222 ,  C03B37/025 ,  C03B2203/23 ,  G02B6/02042

Abstract: A production method of an optical fiber preform includes: preparing a plurality of bar-shaped first preforms and a plurality of second preforms including through holes having substantially same shape with a shape of outer periphery of a cross section of the first preform, the cross section being orthogonal to a major axis of the first preform; and an assembly step of: matching the through holes of the second preforms to make communication holes; and inserting, through each of the communication holes, at least two of the first preforms arranged side by side in a direction of the major axis such that the second preforms and the first preforms are fitting each other. In at least one position in the direction of the major axis of the communication holes, a position where the second preforms contact with each other differs from a position where the first preforms contact with each other.

Abstract translation: 光纤预制棒的制造方法包括：准备多个棒状的第一预成型体和多个第二预成型体，所述多个第二预成型体包括具有与第一预成型体的截面形状相同形状的通孔，截面积 正交于第一预型件的长轴; 以及组装步骤：使所述第二预成型体的通孔匹配以形成连通孔; 以及通过每个所述连通孔插入沿所述长轴方向并排布置的至少两个所述第一预制件，使得所述第二预制件和所述第一预制件彼此配合。 在连通孔的长轴方向的至少一个位置上，第二预成型件彼此接触的位置与第一预成型件彼此接触的位置不同。

公开(公告)号：US20160028206A1

公开(公告)日：2016-01-28

申请号：US14835641

申请日：2015-08-25

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kengo WATANABE ,  Tsunetoshi SAITO ,  Yukihiro TSUCHIDA ,  Koichi MAEDA ,  Katsunori IMAMURA

IPC: H01S3/094 ,  G02B6/02 ,  H01S3/067 ,  G02B6/40

CPC classification number: H01S3/094042 ,  G02B6/02042 ,  G02B6/2552 ,  G02B6/2856 ,  G02B6/40 ,  H01S3/06737 ,  H01S3/06745 ,  H01S3/06783 ,  H01S3/094003 ,  H01S3/1608

Abstract: A bundle structure is obtained by arranging optical fibers having equal diameters in a close-packed arrangement around the outer circumference of a center optical fiber. The optical fibers are signal light optical fibers that transmit signal lights. The optical fiber is a pump light optical fiber that transmits pump light. The number of optical fibers is equal to the number of cores in the multi-core fiber. The bundle structure and the multi-core fiber are connected to one another by adhering or fusing. The cores and the cores are optically connected, and the core and the cladding are optically connected. When connecting, the mode field diameter of the cores and the cores are substantially equivalent. In addition, the outer diameter (diameter of circumscribed circle including optical fibers) of the bundle structure is set so as not to be greater than the outer diameter of the multi-core fiber.

Abstract translation: 通过以紧密堆积的方式布置具有相等直径的光纤围绕中心光纤的外圆周来获得束结构。 光纤是传输信号灯的信号光纤。 光纤是透射泵浦光的泵浦光纤。 光纤的数量等于多芯光纤中的芯数。 束结构和多芯光纤通过粘接或熔合而相互连接。 芯和芯被光学连接，并且芯和包层被光学连接。 当连接时，芯和芯的模场直径基本相等。 此外，束结构的外径（包括光纤的外接圆的直径）设定为不大于多芯纤维的外径。

公开(公告)号：US20160231511A1

公开(公告)日：2016-08-11

申请号：US15134343

申请日：2016-04-20

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kengo WATANABE ,  Tsunetoshi SAITO

IPC: G02B6/38 ,  G02B6/02

CPC classification number: G02B6/3885 ,  G02B6/02042 ,  G02B6/04 ,  G02B6/3863 ,  G02B6/3882 ,  G02B6/403

Abstract: In the present invention, a connector structure comprises a multi-core fiber and a ferrule. The multi-core fiber comprises a plurality of cores and a cladding that surrounds the cores. The ferrule holds the multi-core fiber. A tip of the multi-core fiber protrudes from an end face of the ferrule. A relation Δ≦14.8/a is satisfied. In the formula, Δ(μm) is a difference between a maximum protrusion height and a minimum protrusion height from an end face of the ferrule in a reference circle at the tip of the multi-core fiber. The reference circle is a minimum circle that includes all mode field diameters of the plurality of the cores having a center of cross section of the multi-core fiber as its center. And a(μm) is a radius of the reference circle.

Abstract translation: 在本发明中，连接器结构包括多芯光纤和套圈。 多芯光纤包括多个芯和围绕芯的包层。 套圈保持多芯光纤。 多芯纤维的尖端从套圈的端面突出。 满足关系Δ≤14.8/ a。 在该公式中，Δ（μm）是在多芯光纤的尖端处的基准圆中的套圈的端面的最大突起高度和最小突出高度之间的差。 参考圆是包括以多芯纤维的横截面为中心的多个芯的所有模场直径的最小圆。 a（μm）是参考圆的半径。

公开(公告)号：US20150055923A1

公开(公告)日：2015-02-26

申请号：US14474177

申请日：2014-08-31

Applicant: FURUKAWA ELECTRIC CO.,LTD.

Inventor： Tsunetoshi SAITO ,  Katsunori IMAMURA ,  Kengo WATANABE

IPC: G02B6/255 ,  C03B37/012 ,  G02B6/02

CPC classification number: G02B6/2555 ,  C03B37/01222 ,  C03B2203/14 ,  C03B2203/34 ,  G02B6/02042 ,  G02B6/02338 ,  G02B6/2551

Abstract: A multicore fiber 1 includes a plurality of cores 3 disposed at predetermined intervals and surrounded by a cladding 5. The multicore fiber 1 also includes a marker 7 formed apart from the cores 3. The refractive index of the marker 7 is different from those of the cores 3 and the cladding 5. For example, the marker 7 may be made of a material having lower refractive index than that of the cladding 5. In this case, for example, the cores 3 may be made of germanium-doped quartz. The cladding 5 may be made of pure quartz. The marker 7 may be made of fluorine-doped quartz. Further, the marker 7 may be an empty hole.

Abstract translation: 多芯纤维1包括以预定间隔设置并被包层5包围的多个芯3.多芯纤维1还包括与芯3分开形成的标记7.标记7的折射率不同于 芯3和包层5.例如，标记7可以由折射率低于包层5的材料制成。在这种情况下，例如，芯3可以由锗掺杂的石英制成。 包层5可以由纯石英制成。 标记7可以由掺氟石英制成。 此外，标记物7可以是空洞。

公开(公告)号：US20140010499A1

公开(公告)日：2014-01-09

申请号：US13966932

申请日：2013-08-14

Applicant: Furukawa Electric Co., Ltd.

Inventor： Katsuki SUEMATSU ,  Tsunetoshi SAITO ,  Takayuki ANDO ,  Mitsuhiro IWAYA

IPC: G02B6/38

CPC classification number: G02B6/3881 ,  G02B6/3652 ,  G02B6/3676 ,  G02B6/3696 ,  G02B6/3829 ,  G02B6/3885

Abstract: The optical connector ferrule has a second alignment board and a housing part having a first alignment board and a pair of side support parts. The first alignment board has a surface in which bare fiber parts of a optical fiber ribbon are positioned in a width direction and has holding grooves for arranging bare fiber parts. Side support parts support ends of the first alignment board and have an open part larger than a width of the ribbon in a upper and/or lower surface side of the first alignment board. The second alignment board has a positioning part for positioning in the width direction by engaging with a part of bare fiber parts on holding grooves and a fixing part for pressing and fixing bare fiber parts. The second alignment board is arranged to face the first alignment board and to sandwich bare fiber parts.

Abstract translation: 光连接器套圈具有第二对准板和具有第一对准板和一对侧支撑部的壳体部。 第一对准板具有其中光纤带的裸光纤部分沿宽度方向定位并具有用于布置裸光纤部件的保持槽的表面。 侧支撑部分支撑第一对准板的端部，并且具有大于第一对准板的上表面侧和/或下表面侧的带的宽度的开口部。 第二对准板具有用于通过与保持槽上的裸露部分的一部分接合的宽度方向定位的定位部分和用于按压和固定裸光纤部件的固定部分。 第二对准板布置成面对第一对准板并夹着裸光纤部件。

公开(公告)号：US20170235061A1

公开(公告)日：2017-08-17

申请号：US15501395

申请日：2015-08-04

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kengo WATANABE ,  Tsunetoshi SAITO

IPC: G02B6/38 ,  G02B6/04 ,  G02B6/42 ,  G02B6/02

CPC classification number: G02B6/3885 ,  G02B6/02042 ,  G02B6/04 ,  G02B6/3672 ,  G02B6/40 ,  G02B6/4202

Abstract: This optical fiber connection structure connects a multicore fiber and a bundle structure bundling a plurality of optical fibers. The multicore fiber has a plurality of cores arranged in a lattice. The bundle structure includes closely packed optical fibers of the same diameter. The bundle structure is configured such that signal light optical fiber groups including signal light optical fibers and a dummy fiber group including dummy optical fibers are stacked in multiple layers. The signal light optical fiber groups are configured with the signal light optical fibers aligned in the mutually contacting direction. The signal light optical fiber groups and the dummy fiber group are stacked orthogonal to the alignment direction of the optical fibers constituting the respective fiber groups.

公开(公告)号：US20170168247A1

公开(公告)日：2017-06-15

申请号：US15443987

申请日：2017-02-27

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kengo WATANABE ,  Tsunetoshi SAITO ,  Katsuki SUEMATSU ,  Mitsuhiro IWAYA ,  Kohei KAWASAKI ,  Masahito MORIMOTO

IPC: G02B6/38

CPC classification number: G02B6/3885 ,  G02B6/3834 ,  G02B6/3839 ,  G02B6/3843 ,  G02B6/40

Abstract: A plurality of holes are formed in a ferrule. The holes are at sites penetrated by the tips of optical fibers. An opening is formed in the upper surface of the ferrule and an internal housing section is exposed from the opening. The housing section is at a site at which an optical fiber holding member is housed. The optical fibers are held by the optical fiber holding member. The optical fibers are multi-core fibers. In other words, the optical fibers have a specified axis of symmetry in a cross-section vertical to the longitudinal direction of the optical fibers and have orientation relative to a rotation direction having the longitudinal direction as the axis thereof.

公开(公告)号：US20160020573A1

公开(公告)日：2016-01-21

申请号：US14834448

申请日：2015-08-25

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kengo WATANABE ,  Tsunetoshi SAITO ,  Yukihiro TSUCHIDA ,  Koichi MAEDA ,  Katsunori IMAMURA

IPC: H01S3/067 ,  H01S3/094 ,  G02B6/40 ,  G02B6/255

CPC classification number: H01S3/094042 ,  G02B6/02042 ,  G02B6/2552 ,  G02B6/2856 ,  G02B6/40 ,  H01S3/06737 ,  H01S3/06745 ,  H01S3/06783 ,  H01S3/094003 ,  H01S3/1608

Abstract: An optical-fiber-bundle structure is connected to one end of a multi-core fiber. The multi-core fiber has a tapered section formed therein. The outside diameter of the multi-core fiber and the core pitch thereof decrease in the tapered section. It is possible for the multi-core fiber to have an increasing core pitch on the connection-side thereof which connects to the optical-fiber-bundle structure; hence, it is possible to use an easy-to-use large-diameter optical fiber as the optical fiber to be provided in the optical-fiber-bundle structure. When connecting another multi-core fiber to the other end of the multi-core fiber, it is possible to match the outer diameters thereof; hence, when fusion splicing to one another, it is unlikely for a positional shift of the cores to occur.

Abstract translation: 光纤束结构连接到多芯光纤的一端。 多芯纤维在其中形成有锥形部。 多芯纤维的外径和芯间距在锥形部分中减小。 多芯光纤在与光纤束结构连接的连接侧上具有增加的芯间距， 因此，可以使用易于使用的大直径光纤作为光纤束结构中设置的光纤。 当将多芯纤维连接到多芯光纤的另一端时，可以匹配其多芯纤维的外径; 因此，当熔接彼此时，不可能使芯发生位置偏移。

公开(公告)号：US20140010500A1

公开(公告)日：2014-01-09

申请号：US14021600

申请日：2013-09-09

Applicant: Furukawa Electric Co., Ltd.

Inventor： Tsunetoshi SAITO ,  Kengo WATANABE

IPC: G02B6/40 ,  G01B11/27

CPC classification number: G02B6/40 ,  G01B11/272 ,  G02B6/3885 ,  G02B6/403

Abstract: An optical connector is structured so as to include a fiber connection structure therein. A multi-core fiber is included inside a ferrule, and affixed to the ferrule substrate. One end surface of the multi-core fiber is exposed to an end surface of the ferrule. The other end of the multi-core fiber passes through and is affixed to a capillary. A plurality of optical fiber pass through a capillary that faces the capillary, and are affixed thereto the capillary in the same manner. Seven optical fiber cores of the same diameter are joined in a close-packed arrangement in the fiber connection structure.

Abstract translation: 光连接器被构造为在其中包括光纤连接结构。 多芯纤维包括在套圈内，并固定在套圈衬底上。 多芯纤维的一个端面暴露于套圈的端面。 多芯纤维的另一端通过并固定在毛细管上。 多根光纤穿过面对毛细管的毛细管，并以相同的方式固定在毛细管上。 相同直径的七个光纤芯以紧密堆积的方式连接在光纤连接结构中。