Ph.D. candidate in Ingegneria Elettrica, Elettronica E Delle Comunicazioni , 41st cycle (2025-2028) Department of Electronics and Telecommunications (DET) External Collaborator Department of Electronics and Telecommunications (DET) alessandro.gasbarri@polito.it Profile PhD Research topic Physics-based modeling and design of high-speed VCSELs for datacom: RIN noise characterization, polarization control, and external optical feedback. Tutors Mariangela Gioannini Pierluigi Debernardi Keywords Photonic devices and solar cells Biography uutputs.