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. 05, 2014
Filed:
Mar. 14, 2012
Applicants:
Kazuhiro Yonezawa, Yokohama, JP;
Sumio Hoshino, Yokohama, JP;
Inventors:
Kazuhiro Yonezawa, Yokohama, JP;
Sumio Hoshino, Yokohama, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka-shi, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/02 (2006.01); G02B 6/036 (2006.01); G02B 6/293 (2006.01);
U.S. Cl.
CPC ...
G02B 6/03644 (2013.01); G02B 6/02 (2013.01); G02B 6/03627 (2013.01); G02B 6/03611 (2013.01); G02B 6/29377 (2013.01);
Abstract
The present invention relates to a GI-type multi-mode optical fiber in which the outer diameter 2a of a core is 47.5 to 52.5 μm or 60 to 65 μm. In the multi-mode optical fiber, stress in the optical axis direction remaining in an outermost peripheral portion of the cladding is tensile stress of 0 to 25 MPa, the outermost peripheral portion of the cladding being defined as a region having a diameter of 1.8b or more when the diameter of the cladding is 2b.