Impact of Spectral Filtering on Multipulsing Instability in Mode-Locked Fiber Lasers

Xianting Zhang, Feng Li*, K. Nakkeeran, Jinhui Yuan, Zhe Kang, J. Nathan Kutz, Alex Wai

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

28 Citations (Scopus)

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 multipulsing, periodic and chaotic states, or a single pulse which transits 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 multipulsing. For broadband spectral filtering, the nonlinearity-induced spectral reshaping of the single pulse can lead to a discontinuous pulse energy transition that circumvents multipulsing. The inclusion of third-order dispersion shows that the multipulsing 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

Scopus Subject Areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

User-Defined Keywords

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

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