THE INFLUENCES OF THE ASYMMETRIC GAIN SATURATION EFFECT ON THE DYNAMICS OF InGaAsP FABRY-PEROT LASERS | Zendy

Veronica Dobrovolschi | Zendy; Pîrţac Constantin | Zendy; Vasile Tronciu | Zendy

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THE INFLUENCES OF THE ASYMMETRIC GAIN SATURATION EFFECT ON THE DYNAMICS OF InGaAsP FABRY-PEROT LASERS

Author(s) -

Veronica Dobrovolschi,

Pîrţac Constantin,

Vasile Tronciu

Publication year - 2021

Publication title -

journal of engineering science

Language(s) - English

Resource type - Journals

eISSN - 2587-3482

pISSN - 2587-3474

DOI - 10.52326/jes.utm.2021.28(1).05

Subject(s) - lasing threshold , laser linewidth , saturation (graph theory) , multi mode optical fiber , laser , fabry–pérot interferometer , amplitude , semiconductor laser theory , optics , materials science , rate equation , bifurcation , physics , optical fiber , mathematics , nonlinear system , quantum mechanics , combinatorics , kinetics

This paper reports on the influence of the asymmetric gain saturation on the dynamics of InGaAsP Fabry-Perot lasers. The results are obtained by numerical simulations of multimode rate equations. The gain saturation effects that results in competition phenomena among lasing modes are investigated. A hopping multimode case is examined in detail. With means of the bifurcation analysis the regions with instabilities in the evolution of the mode intensities have been found. The following operation in the plane of two parameters are obtained: stable single mode, stable multimode, bistabile, and multimode hopping. The pulse traces of amplitudes of modes are plotted to illustrate the observed behaviors. Finally, the influence of linewidth enhancement Henry factor on the laser behavior is investigated.

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