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:
Aug. 02, 2016
Filed:
Aug. 24, 2015
Applicant:
Fujikura Ltd., Tokyo, JP;
Inventor:
Itaru Ishida, Sakura, JP;
Assignee:
FUJIKURA LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/44 (2006.01); G02B 6/02 (2006.01);
U.S. Cl.
CPC ...
G02B 6/02042 (2013.01); G02B 6/443 (2013.01); G02B 6/4432 (2013.01); G02B 6/4478 (2013.01);
Abstract
An optical fiber cable includes a tubular sheath and a plurality of optical fibers disposed in the space of the sheath as the optical fibers are bent. In the plurality of optical fibers, at least one optical fiber is a multicore fiber. The multicore fiber satisfies an expression R<R, or R<R, where a bending radius at which the crosstalk of the multicore fiber becomes the worst is defined as R, a bending radius of the multicore fiber at a lowest temperature in operating temperature limits is defined as R, and a bending radius of the multicore fiber at a highest temperature in the operating temperature limits is defined as R.