The fiber optic cable does not plug directly into a standard home router because the signal type must be translated. The fiber line terminates at the Optical Network Terminal (ONT), which is typically supplied and installed by the internet service provider. Run an Ethernet cable from the ONT to the WAN port on your router. When it comes to high-speed internet, fiber optics is the gold. Fiber Optic Modem: This device is essential for translating the optical signals from the fiber optic cable into usable internet data. Your internet service provider (ISP) usually supplies this. Post-installation optimization matters —proper router placement, firmware updates, and network security configuration maximize your fiber internet investment.