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Theses

Les solitons optiques spatiaux vectoriels et leurs interactions

Abstract : Nowadays, data are mainly processed through electronic systems but their transfer has been ensured by optical transmission lines for many years. Indeed, optical fiber communications are the only way to get a bandwidth wide enough to fulfil the continuous growth of transmission rates. However, all-optical signal processing devices can rarely reach the flexibility of electronic ones. Recent research in optics opens new ways to handle this problem, thanks to self-guided waveguides: the solitons. They may be the first step towards compact all-optical and reconfigurable devices able to replace electronics in signal processing. Stability of these beams results from the compensation of diffraction by self-focusing induced by the nonlinearity of the propagation medium. They propagate conserving theur shape and can be considered as data channel which can be inserted in photonic devices in communication networks.

This thesis is aimed at theoretically and experimentally studying a new family of solitons : vector solitons. They consist in the copropagation of several polarization components, mutually trapped in a nonlinear medium. To understand how these multicomponents solitons can exist, one can consider a multimode waveguide where these modes are photoinduced through soliton effect. When several of these modes propagate simultaneously, one of them can act as an effective guide for the higher order ones, generating a multicomponent soliton. In this work, we focused on the study of several members of this new family and on their stability. We will observe their spatial and polarization dynamics in a planar waveguide.
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Contributor : Michaël Delqué <>
Submitted on : Thursday, June 25, 2009 - 8:43:00 AM
Last modification on : Thursday, November 12, 2020 - 9:42:08 AM
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  • HAL Id : tel-00398835, version 1

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Michaël Delqué. Les solitons optiques spatiaux vectoriels et leurs interactions. Sciences de l'ingénieur [physics]. Université de Franche-Comté, 2006. Français. ⟨tel-00398835⟩

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