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US 9,069,114 B2Granted
Bend-resistant single-mode optical fibre
AssigneePrysmian S.p.A.
InventorsAntonio Adigrat, Franco Cocchini, Antonio Collaro, Antonello Schiaffo
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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.
Claims9
A single-mode optical fibre for transmitting optical signals comprising:
- a central core region for guiding the optical signals;
- and
- a cladding region surrounding the core region and comprising a void-containing annular region containing randomly distributed voids, the cladding having an average diameter along a length of the optical fibre,
- wherein the void-containing region is doped with fluorine at a concentration of less than 1 wt % and has a radial thickness equal to or smaller than 3 μm, such that a standard deviation of the average cladding diameter is equal to or smaller than ±0.45 μm.
1 more element
Dependencies are inferred from the claim text.