Radio over fiber (RoF) or RF over fiber (RFoF) refers to a technology whereby light is modulated by a radio frequency signal and transmitted over an optical fiber link. Main technical advantages of using fiber optical links are lower transmission losses and reduced sensitivity to noise and electromagnetic interference compared to all-electrical signal transmission.
Applications range from the transmission of mobile radio signals (3G, 4G, 5G and WiFi) and the transmission of cable television signals (CATV) to the transmission of RF L-Band signals in ground stations for satellite communications.