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:
May. 21, 2013
Filed:
Jan. 19, 2010
Applicant:
Eisuke Sasaoka, Yokohama, JP;
Inventor:
Eisuke Sasaoka, Yokohama, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka-shi, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/036 (2006.01); G02B 6/02 (2006.01); G02B 6/028 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a multi-core optical fiber having a structure to effectively reduce crosstalk between adjacent core regions among a plurality of core regions. The multi-core optical fiber () has a leakage reduction portion (), at least a portion of which is arranged at a position on a straight line connecting adjacent core regions together among a plurality of core regions (). The leakage reduction portion () reduces leakage light in the multi-core optical fiber () from each of the core regions (), thereby effectively reducing crosstalk between adjacent core regions.