Can the router be plugged into the fiber optic port

No, a standard router should not be plugged directly into a fiber optic port; the fiber signal must first pass through an Optical Network Terminal (ONT) which converts it to Ethernet for the router.Why You Need an ONTFiber optic internet transmits data as light signals, which standard routers cannot interpret directly. The Optical Network Terminal (ONT), usually provided by your ISP, serves as the conversion device, translating the incoming optical signal into an electrical signal compatible with your router . The ONT is typically installed near the fiber entry point in your home and connects to the fiber cable via a specialized optical port .Connecting Your RouterOnce the ONT is installed and powered on, you connect your router using a standard Ethernet cable from the ONT's LAN or Ethernet output port to the router's WAN port . The WAN port is often labeled and may be colored differently to indicate it receives the external internet feed. This setup allows your router to distribute the internet connection to your devices via Wi-Fi or additional Ethernet ports.Router CompatibilityNot all routers are suitable for fiber internet. To fully utilize fiber speeds, your router should have a Gigabit Ethernet WAN port and support high-speed connections, ideally Wi-Fi 6 or 6E for optimal performance . Routers designed for DSL or cable connections with phone line or coaxial inputs will not work with fiber internet.SummaryDo not plug a standard router directly into a fiber port.Use the ISP-provided ONT to convert the fiber signal to Ethernet.Connect the router to the ONT via Ethernet using the WAN port.Ensure your router supports high-speed Ethernet to take full advantage of fiber internet . Following this setup ensures a stable, high-speed fiber connection while protecting sensitive fiber equipment from damage.