Slanted gratings UV-written in photosensitive claddingfibre

Abstract

Experimental results concerning slanted gratings photo-written in a photosensitive cladding fibre and in a standard step index fibre are presented. The improvements concerning back reflection for an FWHM bandwidth suitable for erbium-doped fibre amplifier gain equalisation are demonstrated in the case of slanted gratings realised within photosensitive cladding fibre.