Optics and Photonics Society of Iran

We investigate the interaction of self-pulsing laser cavity solitons (SPLCS) in a broad-area semiconductor laser with saturable absorber. We show that for appropriately close distances, synchronization is excepted to happen between SPLCSs. As a result of such an interaction, the two elements drive each other away. Since SPLCSs are free in choosing their phase and polarization, phase interaction between two entities leads to a synchronized behavior in terms of phase and intensity oscillations. We show that interaction strength depends on the initial separation distance of SPLCSs and it is more effective in shorter ranges. We also show how the manifestations of such an interaction, like velocity of SPLCSs, decrease exponentially with the initial separation distance.