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:
Mar. 21, 2006
Filed:
Dec. 14, 2001
Franco Cocchini, Cava Dei Tirreni, IT;
Andrea Mazzotti, Rende, IT;
Alfonso Cavallaro, Battipaglia, IT;
Francesco Di Nola, Sant' Antonio Abate, IT;
Franco Cocchini, Cava Dei Tirreni, IT;
Andrea Mazzotti, Rende, IT;
Alfonso Cavallaro, Battipaglia, IT;
Francesco Di Nola, Sant' Antonio Abate, IT;
Pirelli S.p.A., Milan, IT;
Abstract
An optical cable for telecommunications having an optical core and a plurality of protecting and reinforcing elements or avers placed around the optical core. The optical core has a central reinforcing element, a polymer layer, a plurality of optical fibers incorporated in the polymer layer and a thin sheath which covers the polymer layer. The optical fibers have an alternating spin about their own axes with a maximum value of at least 4 twists per meter, and a core having a mean ellipticity in the range of 0.25 to 0.55, in such a way that the effects of birefringence of the fibers caused by the cabling process are significantly reduced.