Carlos A. Alonso Ramos received the MSc in Telecommunications Engineering from Málaga University (Spain) in 2008. Since 2009 he is doing his PhD on integrated photonic circuits. Nowadays he is working under a FPI scolarship supervised by Dr. Alejandro Ortega. His main task is coupling difraction gratings design. In colaboration with the National Research Council (NRC) in Canada, they have demonstrated efficient grating couplers in thick rib silicon-on-insulator (SOI) waveguides for the first time, and have developed coupling diffraction networks for Fouries spectrum analyzer for atmosphere monitorization tasks on a geostationary satellite. He also works on integrated polarization diversity management circuits. Toghether with the Heinrich Hertz Institute in Germany, they have developed a waveguide polarization rotator with simplified fabrication process. Toghether with the NRC and the Institut d'Electronique Fondamentale in the University of Paris Sud in France, they have developed a new polarization rotation scheme with increased fabrication tolerances.