Study, Modeling and Design of Semiconductor Photonic Crystal Based Devices

This thesis is focused on the study of nonlinear eects in semiconductor materials. The aim is the design of ecient optical devices able to supply ultra-fast high-performances all-optical signal processing. The goal is pur- sued by implementing dierent tools, either theoretical models as well as numerical methods. The main achievement is the design of new topologies for photonic crystal based devices that implement various optical functional- ities such as optical conversion and switching. This work has provided some congurations for the manufacturing of a new generation of optical devices.