Spectral broadening of picosecond pulses forming dispersive shock waves in optical fibers.

Date publication

août 2017

Journal

Optics letters

Auteurs

Membres identifiés du Cancéropôle Est :
Pr MILLOT Guy

Tous les auteurs :
Parriaux A, Conforti M, Bendahmane A, Fatome J, Finot C, Trillo S, Picqué N, Millot G

Lien Pubmed

https://www.ncbi.nlm.nih.gov/pubmed/28957241

Résumé

We investigate analytically, numerically, and experimentally the spectral broadening of pulses that undergo the formation of dispersive shocks, addressing in particular pulses in the range of tens of ps generated via electro-optic modulation of a continuous-wave laser. We give an analytical estimate of the maximal spectral extension and show that super-Gaussian waveforms favor the generation of flat-topped spectra. We also show that the weak residual background of the modulator produces undesired spectral ripples. Spectral measurements confirm our estimates and agree well with numerical integration of the nonlinear Schrödinger equation.

Référence

Opt Lett. 2017 08 1;42(15):3044-3047