Numerical and Experimental Demonstration of Intermodal Dispersive Wave Generation

Niklas M. Lüpken*, Maximilian Timmerkamp, Ramona Scheibinger, Kay Schaarschmidt, Markus A. Schmidt, Klaus J. Boller, Carsten Fallnich

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Scopus)
23 Downloads (Pure)


Evidence of intermodal dispersive wave generation mediated by intermodal cross-phase modulation (iXPM) between different transverse modes during supercontinuum generation in silicon nitride waveguides is presented. The formation of a higher-order soliton in one strong transverse mode leads to phase modulation of a second, weak transverse mode by iXPM. The phase modulation enables not only supercontinuum generation but also dispersive wave generation within the weak mode, that otherwise has insufficient power to facilitate dispersive wave formation. The nonlinear frequency conversion scheme presented here suggests phase-matching conditions beyond what is currently known, which can be exploited for extending the spectral bandwidth within supercontinuum generation.

Original languageEnglish
Article number2100125
JournalLaser and Photonics Reviews
Issue number9
Early online date7 Jul 2021
Publication statusPublished - Sept 2021


  • dispersive wave
  • nonlinear optics
  • silicon nitride
  • supercontinuum generation
  • transverse modes


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