Dissipative light bullets in a doped and weakly nonlocal optical fiber

Ghislaine Flore Kabadiang Ngon, Conrad Bertrand Tabi, Timoléon Crépin Kofané

Research output: Contribution to journalArticlepeer-review


The letter introduces an extended (3+1)-dimensional [(3+1)D] nonlocal cubic complex Ginzburg-Landau equation describing the dynamics of dissipative light bullets in optical fiber amplifiers under the interplay between dopants and a spatially nonlocal nonlinear response. The model equation includes the effects of fiber dispersion, linear gain, nonlinear loss, fiber nonlinearity, atomic detuning, linear and nonlinear diffractive transverse effects, and nonlocal nonlinear response. A system of coupled ordinary differential equations for the amplitude, temporal, and spatial pulse widths and position of the pulse maximum, unequal wavefront curvatures, chirp parameters, and phase shift is derived using the variational technique. A stability criterion is established, where a domain of dissipative parameters for stable steady-state solutions is found. Direct integration of the proposed nonlocal evolution equation is performed, which allows us to investigate the evolution of the Gaussian beam along a doped nonlocal optical fiber, showing stable self-organized dissipative spatiotemporal light bullets.

Original languageEnglish
Article number129291
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Publication statusPublished - Jan 15 2024

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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