公开(公告)号：US20140369659A1

公开(公告)日：2014-12-18

申请号：US14304270

申请日：2014-06-13

申请人： FUJIKURA LTD. ,  NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIV.

发明人： Hitoshi UEMURA ,  Koji OMICHI ,  Katsuhiro TAKENAGA ,  Kunimasa SAITOH

IPC分类号： G02B6/02

CPC分类号： G02B6/02004 ,  G02B6/02042 ,  G02B6/4471

摘要： A fan-in/fan-out device includes a plurality of single-core fibers which are connected to a plurality of first cores of a multicore fiber and which include an elongated portion extending in a longitudinal direction so as to reduce a diameter and being connected to a first end portion of the multicore fiber at a second end portion in an extending direction of the elongated portion, where a refractive index distribution of each of the single-core fibers has a single peak, a relative refractive index difference of a second core with respect to a second cladding in each of the single-core fibers is 0.8% or more; and a second mode field diameter of the second end portion of the elongated portion is greater than a first mode field diameter of the first end portion of the multicore fiber.

摘要翻译： 风扇/扇出装置包括多个单芯光纤，其连接到多芯光纤的多个第一芯，并且包括沿纵向方向延伸的细长部分，以便减小直径并被连接 在所述细长部分的延伸方向上的第二端部处的所述多芯纤维的第一端部，其中每个所述单芯纤维的折射率分布具有单个峰，所述第二芯的相对折射率差 相对于每个单芯纤维中的第二包层为0.8％以上; 并且所述细长部分的第二端部的第二模场直径大于所述多芯光纤的第一端部的第一模场直径。

公开(公告)号：US20130209046A1

公开(公告)日：2013-08-15

申请号：US13851660

申请日：2013-03-27

申请人： Fujikura Ltd. ,  National University Corporation Hokkaido University

发明人： Shoji TANIGAWA ,  Katsuhiro TAKENAGA ,  Masahiro KASHIWAGI ,  Kunimasa SAITOH

IPC分类号： G02B6/02

CPC分类号： G02B6/02009 ,  G02B6/02347 ,  G02B6/0281 ,  H01S3/06741

摘要： A solid photonic band gap fiber includes: a core area located at a central portion of a cross-section with respect to a longitudinal direction of the fiber, the core area being formed of a solid substance having a low refractive index; cladding areas having base portions formed of a solid substance having a low refractive index, the cladding areas surrounding the core area; and a plurality of fine high refractive index scatterers provided in the cladding areas, and disposed in a dispersed manner so as to surround the core area, the number of fine high refractive index scatterers being formed of a solid substance having a high refractive index, wherein in a state that the solid photonic band gap fiber is held at a predetermined bending radius, propagation in a high-order mode is suppressed by using a difference in a bending loss between a fundamental mode and the high-order mode, and only the fundamental mode is substantially propagated, the fundamental mode and the high-order mode being caused by bending.

摘要翻译： 固体光子带隙光纤包括：芯部区域，其位于相对于纤维的纵向方向的横截面的中心部分处，芯部区域由具有低折射率的固体物质形成; 包层区，具有由具有低折射率的固体物质形成的基部，围绕芯区的包层区; 以及多个精细的高折射率散射体，其设置在包层区域中，并且以分散的方式设置成围绕芯区域，由高折射率的固体物质形成的细高折射率散射体的数量，其中 在固体光子带隙光纤被保持在预定的弯曲半径的状态下，通过使用基模和高阶模之间的弯曲损耗的差异来抑制高阶模的传播，并且仅基带 模式基本上被传播，基本模式和高阶模式是由弯曲引起的。

公开(公告)号：US20170199325A1

公开(公告)日：2017-07-13

申请号：US15314801

申请日：2016-02-08

申请人： FUJIKURA LTD. ,  NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY

发明人： Shota SAITO ,  Katsuhiro TAKENAGA ,  Kunimasa SAITOH ,  Takeshi FUJISAWA

IPC分类号： G02B6/02

CPC分类号： G02B6/02042 ,  G02B6/032

摘要： A multicore fiber including two or more cores each capable of single mode transmission, a cladding covering around the two or more cores in common, and a low refractive index portion having a refractive index lower than a refractive index of the cladding, wherein a cross-section perpendicular to a longitudinal direction includes a region where two or more cores of a part or all of the two or more cores are arranged in a circular shape and at least a part of the low refractive index portion is arranged inside an inscribed circle of the cores included in the region.