Nonlinear Dynamics in a Long Cavity Semiconductor Laser

We present the study on the dynamics of a semiconductor laser with a tunable Fabry-Pérot filter and a ring single-mode fiber based long cavity. Theoretically and experimentally, we analyse dynamical regimes of the laser in various operation regimes, including stable and chaotic dynamics and the formation of coherent structures. The laser coherence build up is studied during the turn on, as well as different scenarios of coherence deterioration in such lasers are examined.