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:
Oct. 03, 2006
Filed:
May. 28, 2003
Kaoru Okuno, Yokohama, JP;
Tomoyuki Hattori, Yokohama, JP;
Kaoru Okuno, Yokohama, JP;
Tomoyuki Hattori, Yokohama, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
In an optical fiber ribbonaccording to the present invention, four optical fibersandare arranged in parallel to each other in a plane, a part of the periphery of these four optical fibers is covered with a ribbon matrix, but no rest thereof is covered with the ribbon matrix. First areas covered with the ribbon matrixand second areas uncovered with the ribbon matrix alternate with each other along the longitudinal direction thereof. Alternatively, the optical fiber ribbonis covered with the ribbon matrix over its entire length. In the glass section of each optical fibers, the mode field diameter defined by the definition of Petermann-I at a wavelength of 1.55 μm is 8 μm or less, and the cable cutoff wavelength is 1.26 μm or less.