The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 2017
Filed:
Jul. 17, 2014
Fujikura Ltd., Tokyo, JP;
National University Corporation Hokkaido University, Sapporo-shi, Hokkaido, JP;
FUJIKURA LTD., Tokyo, JP;
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, Sapporo-Shi, JP;
Abstract
A multicore fiber includes six or more of core elements having a core, a first clad surrounding the outer circumferential surface of the core and a second clad surrounding the outer circumferential surface of the first clad, and includes a clad surrounding the core elements. All of expressions are satisfied: n>n>n, n>n, n<n, wherein the refractive index of the core is n, the refractive index of the first clad is n, the refractive index of the second clad is n, and the refractive index of the clad is n. The core elements are disposed so that the inter-center pitch between the cores adjacent to each other is disposed at regular spacing and the centers of the cores are annularly disposed.