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We present simulation results for supercontinuum generation using As 2 S 3 chalcogenide photonic crystal fibers. We found that more than 25% of input power can be shifted into the region between 3 μm and 5 μm using a pump wavelength of 2 μm with a peak power of 1 kW and an FWHM of 500 fs. The broad dispersion profile and high nonlinearity in As 2 S 3 chalcogenide glass are essential for this application.doi:10.1364/ol.35.002907 pmid:20808365 fatcat:yfvn5xv7djg2djxbl2s625knay