Network for distributing signals to a plurality of user equipment
US6885802B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2001 |
| Grant date | Apr 26, 2005 |
| Priority date | — |
| Expiry date | Sep 7, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/03611
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.