WIAS Preprint No. 597, (2000)

Impact of gain dispersion on the spatio-temporal dynamics of multisection lasers


  • Bandelow, Uwe
    ORCID: 0000-0003-3677-2347
  • Radziunas, Mindaugas
  • Sieber, Jan
  • Wolfrum, Matthias

2010 Mathematics Subject Classification

  • 78A60 37N20 35B40


  • Multi-section DFB-Lasers, traveling wave equations, high frequency self-pulsations, gain dispersion, polarization


We present a refined model for multi-section lasers, introducing an additional equation for material polarization in the well known travelling wave model. We investigate the polarization-induced changes in the spectral properties of the optical waveguide. Finally, we show the relevance of this model for a more realistic simulation of complicated dynamical behaviour of multi-section Distributed Feedback (DFB)-Lasers, such as fast self-pulsations, multi-stability, and hysteresis effects due to mode competition.

Appeared in

  • IEEE Journal of Quantum Electronics, (2001), Vol.37, no.2, pp. 183-188

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