title: Few mode Er(3+)-doped fiber with micro-structured core for mode division multiplexing in the C-band.
abstract: Design and experimental characterization of Er(3+)-doped fiber amplifiers supporting 6 spatial modes in wavelength division multiplexing regime are reported. The study is first focused on Er(3+)-doped circular ring-structured profiles accessible with conventional fiber manufacturing techniques. However, these fiber designs, optimized for gain equalization, prove to be difficult to obtain experimentally. So as to go beyond these limits, an alternative approach based on a "pixelated" Er(3+)-doped core is proposed. Several possible designs are theoretically investigated and a first fabrication of micro-structured fiber is presented.
authors: Guillaume
authors: G
authors: Le Cocq
authors: Yves
authors: Y
authors: Quiquempois
authors: Antoine
authors: A
authors: Le Rouge
authors: Géraud
authors: G
authors: Bouwmans
authors: Hicham
authors: H
authors: El Hamzaoui
authors: Karen
authors: K
authors: Delplace
authors: Mohamed
authors: M
authors: Bouazaoui
authors: Laurent
authors: L
authors: Bigot