Impact of Spectral Filtering on Multi-pulsing Instability in Mode-locked Fiber Lasers

Xianting Zhang, Feng Li, Kaliyaperumal Nakkeeran, Jinhui Yuan, Zhe Kang, J. Nathan Kutz, P. K. A. Wai

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27 Citations (Scopus)
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Abstract

We investigate the impact of spectral filtering in mode-locked fiber lasers with an extended geometrical model. Our iterative model, which includes gain, loss and the pulse shaping effects of chromatic dispersion and self-phase modulation, is used to model the laser cavity dynamics. Simulations show that broadband pulses experience large losses from spectral filtering in the cavity, leading to a number of potential laser instabilities and outcomes such as multi-pulsing, periodic and chaotic states, or a single pulse which transitions to a higher energy state. For narrow band spectral filtering, the laser dynamics is dominated by the gain-loss dynamics in the cavity which causes multi-pulsing. For broadband spectral filtering, the nonlinearity induced spectral reshaping of the single pulse can lead to a discontinuous pulse energy transition that circumvents multi-pulsing. The inclusion of third order dispersion shows that the multi-pulsing instability is induced even in the case of broadband spectral filtering.
Original languageEnglish
Article number1101309
Number of pages9
JournalIEEE Journal of Selected Topics in Quantum Electronics
Volume24
Issue number3
Early online date10 Nov 2017
DOIs
Publication statusPublished - May 2018

Bibliographical note

This work was supported in part by the National Natural Science Foundation of China under Grant 61475131, in part by the Research Grant Council of the Hong Kong SAR (PolyU152144/15E), in part by the Shenzhen Science and Technology Innovation Commission (JCYJ20160331141313917), and in part by the Hong Kong Polytechnic University (1-ZVGB). (Xianting Zhang and Feng Li contributed equally to this paper).

Keywords

  • Mode-locked fiber lasers
  • spectral filtering
  • multi-pulsing
  • nonlinear dynamics

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