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Descripción
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| This thesis describes the physics and applications of bistable devices made of bulk and quantum-well structures based on numerical and computational simulations; and analyzes optical regenerators devices based on experimental measurements. A theoretical model of the optical gain in bulk and quantum-well semiconductor structures has been developed to further study the optical bistability in both semiconductor structures within a Fabry-P¿t cavity. An analytical model has been developed for studying dispersive optical bistability in Fabry-P¿t quantum-well semiconductor lasers that exhibit a logarithmic dependence of the optical gain on carrier concentration. The laser is operated in transmission and reflection. Model results are shown for a Fabry-P¿t quantum-well laser and compared with the predictions of a commercial computer-aided design (CAD) software tool. Optical bistability for optical computing applications has also been studied in this thesis. It has been simulated an Optically Programmable Logic Cell based on quantumwell lasers capable to provide boolean logic functions in the optical domain. Finally, all optical 2R-regeneration based on the integration of semiconductor optical amplifiers and electroabsorbers in a single waveguide is experimentally demonstrated. Static transfer functions of concatenated structures show strong improvements of the nonlinearity. An extinction ratio improvement has been obtained under dynamics operation. | |
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Internacional
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Si |
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ISBN
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Tipo de Tesis
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Doctoral |
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Calificación
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Sobresaliente cum laude |
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Fecha
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07/05/110 |