Foued Amrani - Academia.edu (original) (raw)
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Papers by Foued Amrani
We investigate the effect of the gain dynamics on the motion and interactions of solitons in the ... more We investigate the effect of the gain dynamics on the motion and interactions of solitons in the frame of a complex Ginzburg-Landau-type model, which accounts for dissipative soliton formation and propagation in a ring fiber laser. It is shown that the gain dynamics modifies the soliton velocity and their interactions. In the presence of an injected continuous wave, an initial crystal of a few solitons gets broken, either into bunches or into individual solitons. Quasielastic collisions analogous to Newton's cradle have been seen. The soliton set may evolve into gas, solitons, or harmonic mode-locked patterns. The time jitter present in the last situation has been considered.
2010 12th International Conference on Transparent Optical Networks, 2010
We consider a fibre laser operating in a regime where thousands of solitons coexist in the cavity... more We consider a fibre laser operating in a regime where thousands of solitons coexist in the cavity. Because of the soliton interaction, different soliton patterns or complexes are generated depending on the laser parameters. We point out an analogy between soliton complexes and the states of the matter: soliton gas, soliton supersonic flow, soliton liquid, soliton polycrystal and soliton crystal.
Solid State Lasers and Amplifiers IV, and High-Power Lasers, 2010
2012 Symposium on Photonics and Optoelectronics, 2012
2013 15th International Conference on Transparent Optical Networks (ICTON), 2013
ABSTRACT We report two studies, the first allows the generation of a high power laser operating i... more ABSTRACT We report two studies, the first allows the generation of a high power laser operating in continuous wave, and the second generates pulses with high average power. Unlike methods using large mode area fibers, we propose a 10 W double-clad Er:Yb doped fiber amplifier pumped at 980 nm with several laser diodes and spliced to pieces of standard single-mode fibers. In continuous wave laser the output power of about 8 W for 40 W pumping power is obtained. The experimental configuration giving a soliton crystal is based on the nonlinear polarization rotation. The soliton crystal is a particular regime; it is characterized by hundreds of pulses homogeneously distributed in unique condensate structure.
2011 13th International Conference on Transparent Optical Networks, 2011
Advanced Photonics, 2014
ABSTRACT We have studied the influence of an external continuous wave on a passively mode-locked ... more ABSTRACT We have studied the influence of an external continuous wave on a passively mode-locked fiber laser operating in the soliton regime. Starting from an irregular soliton distribution it is shown that harmonic mode-locking is obtained.
2012 14th International Conference on Transparent Optical Networks (ICTON), 2012
We investigate the effect of the gain dynamics on the motion and interactions of solitons in the ... more We investigate the effect of the gain dynamics on the motion and interactions of solitons in the frame of a complex Ginzburg-Landau-type model, which accounts for dissipative soliton formation and propagation in a ring fiber laser. It is shown that the gain dynamics modifies the soliton velocity and their interactions. In the presence of an injected continuous wave, an initial crystal of a few solitons gets broken, either into bunches or into individual solitons. Quasielastic collisions analogous to Newton's cradle have been seen. The soliton set may evolve into gas, solitons, or harmonic mode-locked patterns. The time jitter present in the last situation has been considered.
2010 12th International Conference on Transparent Optical Networks, 2010
We consider a fibre laser operating in a regime where thousands of solitons coexist in the cavity... more We consider a fibre laser operating in a regime where thousands of solitons coexist in the cavity. Because of the soliton interaction, different soliton patterns or complexes are generated depending on the laser parameters. We point out an analogy between soliton complexes and the states of the matter: soliton gas, soliton supersonic flow, soliton liquid, soliton polycrystal and soliton crystal.
Solid State Lasers and Amplifiers IV, and High-Power Lasers, 2010
2012 Symposium on Photonics and Optoelectronics, 2012
2013 15th International Conference on Transparent Optical Networks (ICTON), 2013
ABSTRACT We report two studies, the first allows the generation of a high power laser operating i... more ABSTRACT We report two studies, the first allows the generation of a high power laser operating in continuous wave, and the second generates pulses with high average power. Unlike methods using large mode area fibers, we propose a 10 W double-clad Er:Yb doped fiber amplifier pumped at 980 nm with several laser diodes and spliced to pieces of standard single-mode fibers. In continuous wave laser the output power of about 8 W for 40 W pumping power is obtained. The experimental configuration giving a soliton crystal is based on the nonlinear polarization rotation. The soliton crystal is a particular regime; it is characterized by hundreds of pulses homogeneously distributed in unique condensate structure.
2011 13th International Conference on Transparent Optical Networks, 2011
Advanced Photonics, 2014
ABSTRACT We have studied the influence of an external continuous wave on a passively mode-locked ... more ABSTRACT We have studied the influence of an external continuous wave on a passively mode-locked fiber laser operating in the soliton regime. Starting from an irregular soliton distribution it is shown that harmonic mode-locking is obtained.
2012 14th International Conference on Transparent Optical Networks (ICTON), 2012