Frequent disruptions in fiber-to-the-home (FTTH) networks, particularly in the optical distribution network (ODN) deployed by Sonatel-Senegal, can affect up to thirty customers per cable. Delays in resolving these outages can significantly impact the safety, health, and operations of businesses that rely on these connections. To address this challenge, innovative deployment and maintenance strategies are needed. This study proposes replacing the traditional fast ODN topology with a ring-based quick ODN topology that supports self-healing. This looped design utilizes new bidirectional sub-boxes and remote nodes (RNs) to enable automatic self-repair in the event of disruptions. This work presents the theoretical framework for these new sub-box configurations and describes the signal pathways in both direct and indirect directions. These pathways ensure service continuity, even in isolated sections of the network. Using OptiSystem version 17 for simulation, we identified a threshold power of ？23 dBm, which aligns with acceptable telecommunications bit error rate (BER) standards. The analysis shows that in the ring ODN model, the power delivered to the customer drops to ？29 dBm, with each sub-box in the loop introducing a 13.5 dB insertion loss. In comparison, the quick ODN model exhibits a 3 dB loss per line. The implementation of this new deployment technique would require an increase in transmission power at the optical line terminal (OLT) simply by replacing the optical module without modifying the physical infrastructure at the central office in order to compensate for the insertion losses associated with each sub-box.
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