title: Suppression of discrete cladding mode resonances in fibre slanted Bragg gratings for gain equalisation.
abstract: In a slanted Bragg grating, coupling between the fundamental guided mode and the counterpropagative cladding modes result in discrete resonances in the transmission spectrum. These resonances are a drawback when Slanted Bragg Gratings are used for gain flattening of fibres amplifiers. A new method based on a chemical etching of the cladding is proposed leading to an overlap of the resonances and a reduction of the amplitude of the modulation. This method can be applied for any value of photo induced modulation amplitude in the SBG.
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Kerrinckx
authors.forename: Arif
authors.initials: A
authors.lastname: Hidayat
authors.forename: Pierre
authors.initials: P
authors.lastname: Niay
authors.forename: Yves
authors.initials: Y
authors.lastname: Quiquempois
authors.forename: Marc
authors.initials: M
authors.lastname: Douay
authors.forename: Isabelle
authors.initials: I
authors.lastname: Riant
authors.forename: Carlos
authors.initials: C
authors.lastname: De Barros