Chalcogenide glass fibers are the best candidates for mid-infrared transmission. Their low optical losses and high-power
damage threshold are enabling numerous applications: laser power delivery, chemical sensing and imaging.
Furthermore, chalcogenide glass fibers are best candidates for demonstrating rare-earth doped fiber lasers and
supercontinuum sources in the mid-infrared. The latest results towards the creation of a 4.5 micron fiber laser and a
broadband (2-5 micron) supercontinuum source are presented.