公开(公告)号：US20150139600A1

公开(公告)日：2015-05-21

申请号：US14603488

申请日：2015-01-23

Applicant: Fujikura Ltd.

Inventor： Shoji Tanigawa ,  Katsuhiro Takenaga

IPC: G02B6/02

CPC classification number: G02B6/02042 ,  C03B37/01222 ,  C03B37/02754 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/26 ,  C03B2203/34 ,  C03B2205/14

Abstract: Provided is a method of producing a preform 10P for a coupled multi-core fiber including: an arranging process P1 for arranging a plurality of core glass bodies 11R and a clad glass body 12R in such a way that the plurality of core glass bodies 11R are surrounded by the clad glass body 12R; and a collapsing process P2 for collapsing a gap between the core glass bodies 11R and the clad glass body 12R, wherein the respective core glass bodies 11R have outer regions 16 having a predetermined thickness from the periphery surfaces and made of silica glass undoped with germanium, and the clad glass body 12R is made of silica glass having a refractive index lower than a refractive index of the outer regions of the core glass bodies 11R.

Abstract translation: 提供一种制造用于耦合的多芯光纤的预成型件10P的方法，包括：布置过程P1，其布置多个芯玻璃体11R和包层玻璃体12R，使得多个芯玻璃体11R为 被包层玻璃体12R包围; 以及用于塌缩芯玻璃体11R与包层玻璃体12R之间的间隙的塌陷处理P2，其中各个芯玻璃体11R具有从外围表面预定厚度的外部区域16，并且由锗未掺杂的石英玻璃制成， 并且包层玻璃体12R由折射率低于芯玻璃体11R的外部区域的折射率的石英玻璃制成。

公开(公告)号：US20130308913A1

公开(公告)日：2013-11-21

申请号：US13846127

申请日：2013-03-18

Applicant: FUJIKURA LTD.

Inventor： Shoji Tanigawa ,  Katsuhiro Takenaga

IPC: G02B6/02

CPC classification number: G02B6/02042

Abstract: A multicore fiber has a plurality of cores; and a clad which surrounds an outer peripheral surface of each of the cores, and at least one of the cores is spirally arranged such that the core rotates around a center axis of the clad. By arranging the cores in this way, it is possible to prevent crosstalk between specific cores from escalating even when the multicore fiber is disposed in a bent state.

Abstract translation: 多芯光纤具有多个芯; 以及围绕每个芯的外周表面的包层，并且至少一个芯螺旋地布置成使得芯围绕包层的中心轴旋转。 通过以这种方式布置芯，即使当多芯纤维处于弯曲状态时，也可以防止特定芯之间的串扰升高。