No, fiber optic internet uses an ONT (Optical Network Terminal) instead of a modem to convert light signals into an internet connection for your router. What router is best for fiber internet? Look for a Wi-Fi 6 router with Gigabit Ethernet ports and strong processing power. With the launch of the new Wi-Fi 7 routers BE800 and BE900, our home routers have begun to utilize the high speeds that come with added SFP+ Compatibility. A. The process to connect fiber optic cable to router requires careful attention to detail, but I'll walk you through every critical step with the precision and clarity you deserve. The core question revolves around how your existing router, typically designed for cable or DSL modems, will interface with the. Most fiber ISPs, including Mercury, provide an ONT that connects directly to your router via an Ethernet cable.