Multimode ultrafast nonlinear optics in optical waveguides: numerical modeling and experiments in kagomé photonic-crystal fiber

• DOI: 10.1364/josab.31.000311
• Publication Date: 2014-01-22T16:22:01Z
• Authors: Francesco Tani; John C. Travers; Philip St.J. Russell
• Keywords: 0103 physical sciences; 01 natural sciences

We introduce a general full-field propagation equation for optical waveguides, including both fundamental and higher order modes, apply it to the investigation of spatial nonlinear effects ultrafast extremely broadband processes in hollow-core fibers. The model is used describe pulse gas-filled waveguides full dispersion, Kerr, ionization effects. study third-harmonic generation into soliton emission resonant dispersive waves intermodal four-wave mixing, Kerr-driven transverse self-focusing plasma-defocusing, all kagome photonic crystal fiber system. In latter case form waveguide-based filamentation numerically predicted.