Yes, you can connect a fibre optic cable to a wireless router. You need a modem or ONT to do so. As internet speeds continue to evolve, fiber optic broadband is becoming the gold standard for ultra-fast and reliable internet connections. 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. org/wiki/Network_interface_device#Optical_network_terminals Some ISP's use ONT's that have integrated routers - its easier for THEM but it gives them more control over. Assume you have house with direct access to an optic fibre cable (FTTP). In the basement, there is the ONT+residental gateway device that converts the light impulses to Ethernet.