Fundamental solitons in parity-time symmetric lattice with a vacancy defect

Mahmut Baʇci, Ilkay Bakirtaş*, Nalan Antar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


We put forward a mechanism for delaying the collapse of the fundamental solitons in nonlinear media whose dynamics is governed by two-dimensional nonlinear Schrödinger (NLS) equation with parity-time symmetric (PT-symmetric) periodic potentials with/without a vacancy defect. We observed that strengthened gain-loss component (imaginary part of the potential) in the periodic lattice impoverish the stability properties of the solitons, on the other hand adding a vacancy defect to the periodic PT-symmetric lattice acts as a delaying mechanism for collapsing solitons.

Original languageEnglish
Pages (from-to)472-481
Number of pages10
JournalOptics Communications
Publication statusPublished - 1 Dec 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier B.V.


  • PT-Symmetric
  • Stability analysis
  • Vacancy defect


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