Topological Charge Switch in Active Multi-Core Fibers

Petra P. Beličev, Goran Gligorić, Aleksandra Maluckov, Ljupčo Hadžievski, Sergei Turitsyn*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Topological properties can make light field remarkably robust to various external perturbations. The ability to control and change on demand topological characteristics of light paves the way to new interesting physical phenomena and applications. Here, numerical modelling design of the device based on active multi-core fiber that can change topological charge of the state of light has been proposed. The concept is based on the nonlinear dynamics of optical vortices in active multi-core optical fiber with linearly coupled cores, saturated gain, and constant linear losses. Results demonstrate that the proposed system can provide change of the topological charge of vortices.

Original languageEnglish
Article number2100108
JournalAnnalen der Physik
Issue number9
Early online date5 Jul 2021
Publication statusPublished - Aug 2021

Bibliographical note

Funding Information:
This research was funded by the Ministry of Education, Science and Technological Development of Republic of Serbia. SKT acknowledges support from the Russian Science Foundation (Grant No. 17‐72‐30006).


  • light amplification
  • nonlinear active multi-core fiber
  • optical switch


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