Low-threshold supercontinuum generation in dispersion engineered highly nonlinear chalcogenide fiber nanowires

We report fabrication of chalcogenide nanowires with tailored dispersion enabling low-threshold soliton fission leading to supercontinuum generation. Tapered sub-micron chalcogenide fiber exhibit record ultrahigh nonlinearity (γ ~ 54.1/W/m), over 50,000 times standard silica fiber, and anomalous dispersion.