Yes, a router can work with fiber optic internet. The router connects to a fiber optic modem or Optical. In this guide, we'll explain router compatibility, setup steps and whether upgrading your router is necessary to maximize fiber speeds. Do I Need a Special Router for Fiber Optic Internet? Fiber internet transmits data using light signals through fiber-optic cables, which differs from traditional. A fiber router is designed to work specifically with fiber optic internet connections, providing faster and more reliable speeds compared to a normal router that typically works with traditional broadband connections. To use it, you'll need a router that supports high-speed data transfer.