RF over Fiber (RFoF) refers to the technology that transmits radio frequency (RF) signals over optical fiber cables. RF to optical transmitters play a critical role in enabling high-speed data transfer over long distances using fiber optic technology. Main technical advantages of using fiber optical links are lower transmission losses and reduced sensitivity to noise and. RF over fiber (RFoF) is the method of converting a radio wave (RF) into light by modulating the intensity of the light source (typically a laser) with RF signal. This is an analog process and no digitization is used.