Study of EDFA Placement in 10 Gbps Single-Mode Fiber Link to Support 5G Networks

The new generation of mobile communication technology plays a crucial role in driving the future of Industry 4.0. The 5G networks will have high network flexibility and guarantee the Quality of Service (QoS) requirement. As a basic 5G network connection, the transport network must guarantee bandwidth, delay, synchronization, and reliability. Interconnection between 5G wireless networks and fiber optic networks as a transport network offers a more cohesive experience across fixed and cellular applications. As a transport network, optical fiber supports the application of metropolitan, regional, and national networks, which require long transmission distances. However, when optical signals propagate through the fiber, fiber attenuation appears as a disturbance due to much longer use of transmission distance. This research investigates the effects of different placement of EDFA in single-channel of single-mode fiber (SMF) link using a 10 Gbps bit rate data transmission at various transmission distance and source power levels. This research considers the parametric study of pre-amplifier and booster amplifier with NRZ modulation format at different transmission distances from 70 km to 130 km, and input powers from -18 dBm to 30 dBm simulated by using OptiSystem to characterize the Bit Error Rate (BER). The results show that in different situations, the system will require different EDFA schemes to meet the signal amplifier requirements. This result is useful for selecting different schemes of EDFA in designing a long-haul transmission with high data rates.