Yes, a router can work with fiber optic internet. The router connects to a fiber optic modem or Optical. That's why we're here to present to you the top 10 routers in the market that are specifically designed to deliver a blazing-fast 500mbps internet speed. Get ready to enhance your online experience with the best router for 500mbps, as we dive into our comprehensive review and buyer's guide. What type of SFP module do I need to use to connect the fiber cable to the MikroTik router? Are there any specific requirements or recommendations for the SFP module? Connection and Configuration: Once I have the router and SFP. While the internet connection comes in via fiber optic cable, the device that manages your home network—your router—still needs to be able to communicate with the incoming signal. This communication typically happens through an Ethernet port. Why Use Fiber Optic Internet? Before diving into the setup, let's quickly. For fiber, your router needs the right WAN connection, speed support, and Wi-Fi capabilities. Routers designed for DSL (which uses phone line inputs) or cable (which uses coaxial inputs) won't work.