Nonlinear Effects in Photonic Materials - Abstract

Tlidi, Mustapha

Generation of ultra fast solitons in low dispersion photonic crystal fiber cavity

Taking up to fourth order dispersion effects into account, we show that fiber resonators become stable for large intensity regime. The range of pump intensities leading to modulational instability becomes finite and controllable. Moreover, by computing the thresholds and frequencies of these instabilities, we demonstrate the existence of a new unstable frequency at the primary threshold. This frequency exists for arbitrary small but nonzero fourth order dispersion coefficient. Numerical simulations for a low and flattened dispersion photonic crystal fiber resonator confirm analytical predictions and opens the way to experimental implementation. More importantly, when the modulational instabilities appear subcritically, dissipative localized structures or solitons are formed in this system.