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Numerical and Experimental Demonstration of Intermodal Dispersive Wave Generation
Author(s) -
Lüpken Niklas M.,
Timmerkamp Maximilian,
Scheibinger Ramona,
Schaarschmidt Kay,
Schmidt Markus A.,
Boller KlausJ.,
Fallnich Carsten
Publication year - 2021
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.202100125
Subject(s) - supercontinuum , optics , physics , cross phase modulation , modulation (music) , bandwidth (computing) , transverse plane , self phase modulation , phase modulation , soliton , nonlinear system , nonlinear optics , optoelectronics , wavelength , telecommunications , photonic crystal fiber , phase noise , acoustics , computer science , engineering , laser , quantum mechanics , structural engineering
Abstract 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.