Spatiotemporal quasisolitons and resonant radiation in arrays of silicon-on-insulator photonic wires

Generation of light bullets

“…Our work revealed a new evolution scenario of adiabatic reshaping of LBs which sheds new light on previously puzzling results obtained in similar systems [13] and offers an interpretation in terms of evolving LBs for the dynamic of the socalled spatiotemporal quasisolitons [19]. We point out that the identification of the decay mechanism opens new perspectives for the design of systems aimed at the excitation of very long-lived LBs.…”

“…We remark that even in far-from-ideal systems the concept of solitary waves is a useful tool, allowing the understanding of complex nonlinear phenomena such as optical rogue waves [16] and supercontinuum generation [17,18]. In fact, the name ''quasisoliton'' was recently used to describe nearly stationary spatiotemporal wave packets propagating in planar waveguides arrays [19].In this Letter, we report the first observation of 3D LBs in a two-dimensional array of coupled waveguides. We have found that due to higher-order effects, LBs evolve following varying dispersion or diffraction conditions until they leave their existence range [7] and decay.…”

“…We remark that even in far-from-ideal systems the concept of solitary waves is a useful tool, allowing the understanding of complex nonlinear phenomena such as optical rogue waves [16] and supercontinuum generation [17,18]. In fact, the name ''quasisoliton'' was recently used to describe nearly stationary spatiotemporal wave packets propagating in planar waveguides arrays [19].…”

Observation of Discrete, Vortex Light Bullets

“…As opposed to previous works, it is fully self-confined along all spatial and temporal transverse dimensions. It was predicted in the 1990s [30] but eluded observation [31] until recent breakthroughs in modeling [32,33], sample fabrication [34,35], and analysis techniques [36,37] could be brought to bear, immediately bringing forward new spatiotemporal effects such as self-induced soliton decay, direct space-time coupling, and superluminal decay [38,39].…”

Collisions between discrete spatiotemporal dissipative Ginzburg-Landau solitons in two-dimensional photonic lattices

“…Thus the presence of gain and loss due to optical amplifiers and saturable absorbers in truncated periodic photonic structures has been investigated and dissipative surface light bullets were introduced [46,47]. Similar to other types of discrete dissipative solitons in both oneand two-dimensional lattices [42][43][44][45], the dissipative surface light bullets exhibit novel features that, as a result of both discreteness and gain (loss) effects, have no counterpart in either the continuous limit or in other conservative discrete models for both cubic and quadratic nonlinear media [48][49][50][51][52][53][54][55].…”