MULTI-CORE OPTICAL FIBER

To suppress occurrence of structural abnormality such as air bubbles in the vicinity of a boundary between a marker and a cladding.SOLUTION: An MCF (multi-core optical fiber) according to one embodiment comprises: a glass optical fiber including a plurality of cores, a marker, and a cladding; and a...

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Bibliographic Details
Main Authors SAKUMA HIROTAKA, HASEGAWA TAKEMI, SUGANUMA TAKAHIRO
Format Patent
LanguageEnglish
Japanese
Published 31.08.2023
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:To suppress occurrence of structural abnormality such as air bubbles in the vicinity of a boundary between a marker and a cladding.SOLUTION: An MCF (multi-core optical fiber) according to one embodiment comprises: a glass optical fiber including a plurality of cores, a marker, and a cladding; and a resin covering. On a cross section of the MCF, centers of the plurality of cores and a center of the marker configure a plane figure having one-fold rotational symmetry relative to a center of the cross section. Further, on the cross section, the marker is disposed so as to be positioned on a circumference of a circle that has a center coinciding with the center of the cross section and has a circumference passing-through each center of the plurality of cores.SELECTED DRAWING: Figure 2 【課題】マーカーとクラッドの境界近傍における気泡等の構造異常の発生を抑制する。【解決手段】一実施形態のＭＣＦは、複数のコアとマーカーとクラッドを含むガラス光ファイバと、樹脂被覆を備える。ＭＣＦの断面上において、複数のコアの中心とマーカーの中心は、断面中心に対して1回回転対称の平面図形を構成する。さらに、断面上において、断面中心に一致した中心を有するとともに複数のコアのそれぞれの中心を通過する円周を有する円の円周上にマーカーが位置するように、配置されている。【選択図】図２
Bibliography:Application Number: JP20220024891