Single Channel Passive Optical Network with High Data Rate for Increasing Broadband Access Capacity

Digital transformation requires significant high data rate transmission for broadband access, including optical fiber networks. Increasing the data rate is a technique to provide more capacity linearly; however, its major challenge is dispersion, which limits its capacity in shorter distances. This research proposed an optical network design with a bitrate observation of 16 Gbps and 12.5 Gbps, respectively, for downstream and upstream in a single-channel passive optical network by applying the dispersion compensation fiber (DCF) to compensate for the dispersion of a $1: 64 \mathrm{splitting}$ ratio. The results show that the compensating component improves the $\mathbf{Q}$ factor, which means that the dispersion can be suppressed. Without using DCF, the maximum downstream distance to meet the target is 30 km with a Q-Factor of 6.07. With DCF, a downstream distance of 40 km is still feasible, as the Q-Factor at 40 km is 7.06. Meanwhile, the upstream system shows unreachable performance in the transmission. Different considerations on data rate, input power, and other factors may contribute to the upstream results. More investigations are necessary to provide an upstream performance that achieves the expected condition.