Prysmian Cavi E Sistemi Energia S.r.l.

Alfredo Gambirasio

Martino Travagnin

Francesco Maria Tassone

A microstructured optical fiber has a core region with a material having a refractive index nand a microstructured region surrounding the core region with a background material having a refractive index nwhich is lower than the refractive index n. The microstructured region has a plurality of microstructures having a refractive index different from the refractive index n, wherein the distance &#x394;between the centers of any couple of adjacent microstructures is at least equal to about &#x3bb;and not higher than about 1.5&#x3bb;, wherein &#x3bb;is the spatial variation length of the electric field intensity in the microstructured region.

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Milan, Italy

Alfredo Gambirasio