Field trial of a hybrid fiber wireless (HFW) bridge for 2.5 Gbit/s GPON

In this paper, we report on a field trial, demonstrating the seamless wireless extension of a real-world 2.5 Gbit/s Gigabit passive optical network (GPON) using a hybrid fiber wireless (HFW) bridge. Direct optic-to-RF conversion using a novel coherent photonic mixer (CPX) and direct RF-to-optic radio access units (RAU) were developed and employed to extend the reach of the GPON network using a 455 m long-distance 73.5 GHz millimeter-wave point-to-point (PTP) wireless link. The wireless GPON bridge was synchronized to the downlink transmission line rate of 2.5 Gbit/s. In the field trial, as total downlink traffic of about 2.5 Gbit/s was transmitted over SMF and the wireless bridge between the OLT and three ONU. The total uplink traffic from two ONUs to the OLT was about 1.2 Gbit/s.