8 × 200 Gbps Hybrid PON and Digital Filter Multiple Access Incorporating Fiber-FSO Link Impairments in a Wheel Architecture

Abstract

Digital filter multiple access passive optical network (DFMA-PON) is adopted in recent years as it offers the high bandwidth, elastic network slicing, low latency, fixed data rate, and massive end-user comparability. To overcome limited system capacity, low transmission rate and fiber fault in existing DFMA-PONs, a wheel architecture based full-duplex 8 × 200 Gbps DFMA-PON integrated system using fiber and free space optics (FSO) link is presented in this paper. Results depict that maximum FSO channel range can be attained up to 2600 m together with 50 km fiber range under weak-to-strong turbulent, haze, rain, fog, and snow conditions. Besides, faithful fiber reach of 200 km can be obtained with fixed 100 m FSO distance at receiver sensitivity of −17.2 dBm and 1.5 dB power penalty. System can support 230 numbers end units at high optical signal to noise ratio of 29–88 dB with 50–200 Gbps throughput, together with high split ratio of 256 to −3.2 dB high gain as well as 2 dB noise figure. In addition, the comparative analysis with the previous work reveals that the proposed architecture offers optimum results than existing PONs. This system helps to enhance the disaster resilience with high network security, reliability, and survivability of 5G based networks.