Wave‐Breaking and Dispersive Shock Wave Phenomena in Optical Fibers

Trillo, Stefano; Conforti, Matteo

doi:10.1002/9781119088134.ch11

Cited by 1 publication

(1 citation statement)

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“…Overall, the dynamics above-observed in MMFs recalls the interplay between shock front (axial spectral broadening) and X-wave formation (conical spectral broadening) in a similar way to shocked-X wave dynamics described in femtosecond filamentation [30]. Moreover, it also makes the connection with well-known dynamics of dispersive shock waves studied in single-mode fibers which results in the emission of resonant radiations by the same phase-matching rule as our relation ( 4), but restricted to the fundamental mode [31]. The condition (4) can be seen as a generalized phase-matching rule of resonant radiations emitted by a broadband localized structure (soliton, shock front) through intra-and inter-modal properties of any waveguide and whatever the dispersion regime.…”

Section: Discretized Conical Waves In Multimode Optical Fibersmentioning

confidence: 57%

Discretized Conical Waves in Multimode Optical Fibers

Kibler

Béjot

2021

Phys. Rev. Lett.

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Multimode optical fibers has emerged as the platform that will bridge the gap between nonlinear optics in bulk media and in single-mode fibers. However, the understanding of the transition between these two research fields still remains incomplete despite numerous investigations of intermodal nonlinear phenomena and spatiotemporal coupling. Some of the striking phenomena observed in bulk media with ultrashort and ultra-intense pulses (i.e., conical emission, harmonic generation and light bullets) require a deeper insight to be possibly unveiled in multimode fibers. Here we generalize the concept of conical waves described in bulk media towards structured media, such as multimode optical fibers, in which only a discrete and finite number of modes can propagate. The modal distribution of optical fibers provides a quantization of conical emission (e.g., quantized X-waves) through phase-matched resonant radiations (i.e., dispersive waves) seeded by optical shocks or ultrashort wave structures during spatiotemporal compression stages. Such quantized dispersion-and diffraction-free waves are generated when a rather intense short pulse propagates nonlinearly in a multimode waveguide, whatever the dispersion regime and waveguide geometry. Future nonlinear experiments in commercially-available multimode fibers could reveal different forms of conical emission and an easy control of supercontinuum light bullets.

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Section: Discretized Conical Waves In Multimode Optical Fibersmentioning

confidence: 57%