Build-up dynamics in bidirectional soliton fiber lasers

Abstract

Bidirectional ultrafast fiber lasers present an attractive solution, enabling the generation of two mutually coherent ultrashort pulse trains in a simple and turnkey system. Still, the lack of a comprehensive numerical model describing steady-state bidirectional generation, and even less ultrafast soliton breakdowns and collisions, is obstructing the achievement of the performance compared with unidirectional lasers. In this paper, we have experimentally investigated real-time build-up dynamics of counter-propagating solitons in an ultrafast ring Er-doped fiber laser via the dispersive Fourier transform methodology. We parade that counter-propagating pulses experience independent build-up dynamics from modulation instability, undergoing breathing dynamics and diverging subordinate pulse structure formation and annihilation to a stable bidirectional pulse train. Yet, the interaction of pulses in the cavity presents the key underlying phenomenon driving formation evolution distinct from unidirectional pulse build-up. Our findings will provide physical foundations for bidirectional ultrafast fiber laser design to carry forward their application.

Publication DOI: https://doi.org/10.1364/PRJ.388988
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences > School of Informatics and Digital Engineering > Electrical and Electronic Engineering
Additional Information: © 2020 Chinese Laser Press
Uncontrolled Keywords: Electronic, Optical and Magnetic Materials,Atomic and Molecular Physics, and Optics
Publication ISSN: 2327-9125
Full Text Link:
Related URLs: https://www.osa ... uri=prj-8-6-776 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2020-05-06
Accepted Date: 2020-03-14
Authors: Chernysheva, Maria
Sugavanam, Srikanth
Kudelin, Igor (ORCID Profile 0000-0002-5892-8544)

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