Abstract
We numerically study the dynamics of vertical cavity surface-emitting lasers (VCSELs) based on the current-dependent gain model subjected to current modulation. For a few hundred MHz frequency of injection current, the threshold current is reduced and polarization switching is accompanied by an anti-phase dynamics of polarization modes. Pulse packages are found and compared with those found in the literature. The behaviour of pulse packages is studied in terms of the modulation parameters. For a few GHz frequency of injection current, the dynamics of VCSELs presents chaotic behaviour.
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