Optical fibre

An optical fibre comprising:

• a hollow core the periphery of which has an order of symmetry of at least six when considering axes of symmetry passing through the centre of the core and through the centre of convex shapes, seen from the centre of the core, said convex shapes at least partially composing the periphery of the core, the periphery of the core has a shape resulting from a combination of elliptical arcs that are convex seen from the centre of the core;
• an intermediate layer having a cellular structure surrounding the core, said intermediate layer having a cellular structure having walls the thickness of which is comprised between 100 nm and 2000 nm, the cellular structure being a Kagome structure, the combination of elliptical arcs constituting a boundary between the Kagome structure and the core;
• a light-conducting peripheral structure surrounding the intermediate layer having a cellular structure;
• and
• an external cladding surrounding the light-conducting peripheral structure.