Hybrid cladding designs in chalcogenide negative curvature hollow-core fibers

Abstract

Ellipse-nested tubular As2Se3 chalcogenide negative curvature hollow-core fibers are numerically presented for the mid-infrared region. Confinement and total losses are calculated as low as 0.39 dB/km and 4.61 dB/km at 10.6 μm, respectively. A further investigation on the fundamental and higher-order modes showed that the proposed fiber favors the single-mode guidance.