Is there no wire when connecting the fiber optic cable to the router

You cannot connect a standard fiber optic cable directly to a typical home router; an ONT is required to convert the optical signal to an electrical signal, which is then transmitted via Ethernet to the router.Why a Wire is NeededFiber optic internet transmits data as light pulses through ultra-thin glass strands. Standard routers cannot interpret these light signals directly. The Optical Network Terminal (ONT), usually provided by your ISP, serves as the intermediary device that converts the optical signal into an electrical signal compatible with your router . Once converted, the ONT outputs the data through a standard Ethernet cable, which connects to the router's WAN port .Connection ProcessFiber Cable to ONT: The fiber optic cable from your ISP plugs into the ONT's optical port. This connection is delicate and requires careful handling to avoid damage or contamination .ONT to Router: Use an Ethernet cable to link the ONT's LAN port to the router's WAN port. This is the “wired” part of the connection that allows your router to distribute internet to devices via Wi-Fi or additional Ethernet ports .Power and Configuration: Both the ONT and router need power. After powering on, the router may require ISP credentials or configuration to establish internet access .Special CasesSome advanced routers have SFP or fiber-ready ports that can accept fiber directly, but these are uncommon in typical home setups. In most residential installations, the ONT is mandatory to bridge the optical network and your router .SummaryWhile fiber optic technology transmits data without electrical wires, a physical Ethernet connection between the ONT and router is still required to convert and deliver the signal to your home network. Direct wireless or optical connection to a standard router is not possible in typical setups .