Numerical modeling of cascaded mid-infrared (IR) supercontinuum generation (SCG) is used to study how an ensemble of spectrally and temporally distributed solitons from the long-wavelength part of an SC evolves when coupled into the normal dispersion regime of a highly nonlinear chalcogenide fiber. This has revealed a novel phenomenon-the generation of a high-energy rogue wave in the normal dispersion regime in the form of a strong self-phase-modulation (SPM) chirped pulse. This SPM rogue wave is generated by swallowing the energy of many sufficiently closely spaced pulses through inter-pulse Raman amplification and is a key effect behind efficient cascaded mid-IR SCG.
|Journal||Journal of the Optical Society of America B: Optical Physics|
|Publication status||Published - Sep 2021|
Bibliographical noteFunding Information:
Innovationsfonden (8090-00060A). We thank Kyei Kwarkye for measuring the ZBLAN loss curve, and Mikkel Jensen for fruitful discussions.
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