Journal of Lasers, Optics & Photonics

ISSN: 2469-410X

Open Access

Stability of Temporal Dark Soliton in PT-Symmetric Nonlinear FiberCouplers in Normal Dispersion Regime


Lida Safaei, Mohsen Hatami and Mahmood Borhani Zarndi

In this paper, we present analytical soliton solutions in a nonlinear PT-symmetric coupler with gain in one fiber and loss in the other one in the normal dispersion regime. As usual, we derive a temporal dark soliton solution for the coupler in the normal dispersion regime. We study the stability of the soliton solution by imposing a perturbation in the system by using the eigenvalue method. The results show that there exist two forms of perturbed soliton solutions, bright and dark. The numerical calculations show that the perturbed solutions in the bright form are stable and the dark form are unstable. Previous works in bright solitons show that there exists only one perturbed bright soliton solution which is stable only in particular regions.


Share this article

Google Scholar citation report
Citations: 279

Journal of Lasers, Optics & Photonics received 279 citations as per Google Scholar report

Journal of Lasers, Optics & Photonics peer review process verified at publons

Indexed In

arrow_upward arrow_upward