Sinobad, MDellaTorre, AlbertoArmand, RemiLuther-Davies, BarryMa, PanMadden, SteveMitchell, ArnanMoss, David JHartmann, Jean-MichelFedeli, Jean-MarcMonat, CGrillet, C2022-10-060146-9592http://hdl.handle.net/1885/274336We demonstrate coherent supercontinuum generation spanning over an octave from a silicon germanium-on-silicon waveguide using ∼200fs pulses at a wavelength of 4 μm. The waveguide is engineered to provide low all-normal dispersion in the TM polarization. We validate the coherence of the generated supercontinuum via simulations, with a high degree of coherence across the entire spectrum. Such a generated supercontinuum could lend itself to pulse compression down to 22 fs.H2020 European Research Council (648546); Agence Nationale de la Recherche (ANR-17-CE24-0028).application/pdfen-AU© 2020 The authors202010.1364/OL.4021592021-11-28