J. Azaña (Canada)
Nonlinear fiber optics; Optical pulse propagation and solitons; dispersive media; Wigner distributions.
Joint Time-Frequency (TF) signal analysis, and in particular Wigner analysis, is applied to the study of picosecond pulse propagation through optical fibers in both the linear and nonlinear regimes. The effects of first and second – order group velocity dispersion (GVD) and self-phase modulation (SPM) are first analyzed separately. The phenomena resulting from the interplay between GVD and SPM in fibers (e.g. soliton formation) are also investigated in detail. TF analysis is demonstrated to be an extremely powerful tool for investigating pulse propagation dynamics in linear and nonlinear dispersive systems (e.g. optical fibers), providing in fact a clearer and deeper insight into the physical phenomena that determine the behaviour of these systems.
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