Bend-resistant single-mode optical fibre

US9069114B2 · kind B2 · utility

Assignee

• Prysmian S.p.A. · IT

Inventors

• Antonio Adigrat · Milano, IT
• Franco Cocchini · Salerno, IT
• Antonio Collaro · Torre del Greco, IT
• Antonello Schiaffo · Milano, IT

Key dates

• Filing date: Jul 23, 2010
• Grant date: Jun 30, 2015
• Expiry date: Dec 1, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/0365
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A single-mode optical fiber for transmitting optical signals includes a central core region for guiding the optical signals, and a cladding region surrounding the core region and including a void-containing annular layer containing randomly distributed voids, wherein the void-containing layer is doped with fluorine at a concentration of less than 1 wt % and has a radial thickness equal to or smaller than 3 μm.