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Observation of spatial nonlinear self-cleaning in a few-mode step-index fiber for special distributions of initial excited modes

Scientific reports, 2021-12, Vol.11 (1), p.24350-24350, Article 24350 [Peer Reviewed Journal]

2021. The Author(s). ;The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;The Author(s) 2021 ;ISSN: 2045-2322 ;EISSN: 2045-2322 ;DOI: 10.1038/s41598-021-03856-x ;PMID: 34934169

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  • Title:
    Observation of spatial nonlinear self-cleaning in a few-mode step-index fiber for special distributions of initial excited modes
  • Author: Mohammadzahery, Zahra ; Jandaghi, Maryam ; Aghayari, Ebrahim ; Nabavi, Hasan
  • Subjects: Experiments ; Lasers ; Propagation ; Semiconductors
  • Is Part Of: Scientific reports, 2021-12, Vol.11 (1), p.24350-24350, Article 24350
  • Description: In this paper, we experimentally demonstrate that a nonlinear Kerr effect in suitable coupling conditions can introduce a spatially self-cleaned output beam for a few-mode step-index fiber. The impact of the distribution of the initial excited modes on spatial beam self-cleaning has been demonstrated. It is also shown experimentally that for specific initial conditions, the output spatial pattern of the pulsed laser can be reshaped into the LP mode due to nonlinear coupling among the propagating modes. Self-cleaning into LP mode required higher input powers with respect to the power threshold for LP mode self-cleaning. Our experimental results are in agreement with the results of numerical calculations.
  • Publisher: England: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2045-2322
    EISSN: 2045-2322
    DOI: 10.1038/s41598-021-03856-x
    PMID: 34934169
  • Source: PubMed Central (Open access)
    DOAJ Directory of Open Access Journals
    AUTh Library subscriptions: ProQuest Central
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