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:
Apr. 26, 2005
Filed:
Sep. 07, 2001
Guidö Oliveti, Turin, IT;
Francesco Ivan Pomarico, Trezzano sul Naviglio, IT;
Giacomo Roba, Monza, IT;
Davide Sarchi, Milan, IT;
Francesco Sartori, Agnadello, IT;
Guidö Oliveti, Turin, IT;
Francesco Ivan Pomarico, Trezzano sul Naviglio, IT;
Giacomo Roba, Monza, IT;
Davide Sarchi, Milan, IT;
Francesco Sartori, Agnadello, IT;
Pirelli S.p.A., Milan, IT;
Abstract
A network for distributing signals to a plurality of user having a distribution unit and a plurality of optical cables adapted to make the distribution unit communicate with the plurality of user equipment. In turn, each optical cable has an optical fibre having a core, a cladding and a predetermined simple refractive index profile Δn(r). Each optical fibre is adapted to guarantee a single-mode propagation at higher wavelengths than about 1260 nm and a few-mode propagation at about 850 nm, and each optical fibre has such refractive index profile Δn(r) as to guarantee macro-bending losses at 1550 nm that are less than about 0.5 dB and an intermodal delay Δτ at 850 nm that is less than or equal to, about 1 ns/Km.