Dispersion Induced-Power Fading tuned by Power-over-Fiber on 5G NR Analog Radio over Fiber Fronthaul optical links

We present experimental results of Power-over-Fiber (PoF) impact on 5G New Radio Analog Radio over fiber transmission. Different ARoF links are implemented with approximate lengths of 6km, 10km, 14km, and 25 km, using QPSK modulations, with a bandwidth of 5MHz and with RF carriers within the range from 10 GHz to 20 GHz. The high power laser (HPL) output is set up to +33 dBm. In the experiment, the power fading, and the critical frequency shift as a consequence of the power injected by the HPL are analyzed. A maximum shift of 250 MHz was experimentally obtained at a length of 25.2 km for a HPL optical power of 33 dBm.