RoF signal distribution with multi-mode-fiber for cascaded IFoF-based C-RAN Mobile Fronthaul

We evaluate and demonstrate radio over fiber (RoF) signal distribution, which employs cost efficient analog radio over multi-mode fiber (A-RoMMF) sub-system with directly modulated single mode vertical cavity surface emitting laser (VCSEL) and multi-mode VCSEL, for cascaded intermediate-frequency-over fiber (IFoF) based centralized radio access network (C-RAN) mobile fronthaul of 28 GHz band.