Solitons, modes of nonlinear waveguides, and saturable nonlinear couplers
This thesis is concerned with solitons, modes of nonlinear waveguides and nonlinear dynamics in saturable nonlinear couplers. Firstly, dark solitons in two and three dimensions are considered. In the case of two dimensional dark solitons it is found that two-photon absorption (intensity dependent loss) leads to broadening and attenuation of dark solitons, whereas gain is shown to lead to their narrowing and amplification. The relations describing the adiabatic evolution of dark solitons...[Show more]
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