Yes, you can often use your existing router with fiber optic internet, but there are crucial considerations. Understanding compatibility, potential limitations, and when an upgrade is necessary will ensure you get the most out of your high-speed connection. This guide will break down everything you. Fiber internet delivers lightning-fast speeds—up to 1 Gbps or more! But even the fastest connection can't work miracles if your Wi-Fi signal dies in the backyard or struggles to reach the attic. The culprit? Wi-Fi coverage gaps. However, the market is flooded with countless options, making the selection quite overwhelming. And depending on what type of cables and SFP transceivers you use, you can extend your network up to 60-80km, ideal for long-range network deployments.