title: Small-core chalcogenide microstructured fibers for the infrared.
abstract: We report several small-core chalcogenide microstructured fibers fabricated by the "Stack & Draw" technique from Ge(15)Sb(20)S(65) glass with regular profiles. Mode field diameters and losses have been measured at 1.55 microm. For one of the presented fibers, the pitch is 2.5 microm, three times smaller than that already obtained in our previous work, and the corresponding mode field diameter is now as small as 3.5 microm. This fiber, obtained using a two step "Stack & Draw" technique, is single-mode at 1.55 microm from a practical point of view. We also report the first measurement of the attenuation between 1 and 3.5 microm of a chalcogenide microstructured fiber. Experimental data concerning fiber attenuation and mode field diameter are compared with calculations. Finally, the origin of fiber attenuation and the nonlinearity of the fibers are discussed.
authors.affiliation: Laboratoire Verres et Céramiques, UMR CNRS 6226, Université de Rennes 1, Rennes, France. frederic.desevedavy@univ-rennes1.fr
authors.forename: Frédéric
authors.initials: F
authors.lastname: Désévédavy
authors.forename: Gilles
authors.initials: G
authors.lastname: Renversez
authors.forename: Laurent
authors.initials: L
authors.lastname: Brilland
authors.forename: Patrick
authors.initials: P
authors.lastname: Houizot
authors.forename: Johann
authors.initials: J
authors.lastname: Troles
authors.forename: Quentin
authors.initials: Q
authors.lastname: Coulombier
authors.forename: Frédéric
authors.initials: F
authors.lastname: Smektala
authors.forename: Nicholas
authors.initials: N
authors.lastname: Traynor
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Adam