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      Spatiotemporal dynamics of self-similar parabolic pulse evolution in multimode fibers

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      Author(s)
      Graini, L.
      Ortaç, Bülend
      Date
      2022-06-05
      Source Title
      Optical and Quantum Electronics
      Print ISSN
      0306-8919
      Electronic ISSN
      1572-817X
      Publisher
      Springer New York LLC
      Volume
      54
      Issue
      6
      Pages
      1 - 14
      Language
      English
      Type
      Article
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      Abstract
      In this paper, we have investigated for the first time, the spatiotemporal dynamics of self-similar parabolic pulse evolution in multimode fibers. Two types of fiber are considered, graded-index and step-index MMFs. For the quality of the generated parabolic pulse, the mismatch parameter is used. A thorough study of the evolution of the pulse parameters as a function of the initial parameters has been carried out. As a result, the initial pulse evolved into a linearly chirped pulse with a parabolic intensity shape in both fibers, under the predominantly excitation of the fundamental mode. It has been shown, in particular, that the pulse can be compressed to a temporal duration of about 40 fs. Moreover, a spatiotemporal nonlinear dynamic, beam auto-selection, of one specific mode, is investigated through graded-index MMF, under the different initial modes excitation. The parabolic pulse formation process plays a critical role in this nonlinear dynamic. This approach provides another framework to understand the complex nonlinear dynamics in MMFs.
      Keywords
      Multimode fibers
      Spatiotemporal parabolic pulse
      Self-similar propagation
      Beam auto-selection
      Permalink
      http://hdl.handle.net/11693/111323
      Published Version (Please cite this version)
      https://www.doi.org/10.1007/s11082-022-03783-9
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      • Institute of Materials Science and Nanotechnology (UNAM) 2258
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