Abstract(s) :

(Anglais) The thesis first gives a numerical demonstration of multicarrier modulation (MCM) applications for realizing next generation transponders (terabit-per-second scale). Two potential candidates among MCM, i.e. orthogonal frequency division multiplexing (OFDM) and filter band multicarrier (FBMC), are taken into account for performance evaluations and comparisons. Nonetheless, multicarrier signals have several issues such as their susceptibility to phase noise (PN) and fiber nonlinear effects. To overcome the PN problem, several low complexity and high performance digital signal processing (DSP) algorithms are proposed for both OFDM and FBMC-based transmissions, followed by intensively numerical and experimental demonstrations. One chapter of the thesis is dedicated to fiber nonlinear mitigation technique for OFDM-based systems by employing support vector machine. Compared to other existing techniques, these above-mentioned DSP proposals provide superior performance and/or lower complexities. Thus, they should be considered while designing next generation optical networks