Router with two 100m fiber optic cables superimposed

You can connect a router using two 100-meter fiber optic cables with duplex transceivers, ensuring proper fiber type, connectors, and compatibility with your router's SFP ports.Fiber Type and TransceiversFor a 100-meter link, multi-mode fiber is typically sufficient, as single-mode is generally used for distances over 2 kilometers, while multi-mode supports shorter runs like 100 meters efficiently . You will need 100M SFP transceivers compatible with your router, such as 100BASE-SX for multi-mode fiber. Ensure the transceiver matches the fiber type, wavelength, and connector type (commonly LC-LC) to avoid signal loss or incompatibility .Duplex vs. Simplex CablesUsing two fibers usually implies a duplex setup, where one fiber transmits (Tx) and the other receives (Rx) data. This is the standard for most 100M fiber connections and allows full-duplex communication . Simplex cables, which use a single fiber for bidirectional communication, are less common and require specialized transceivers. For your setup, duplex cables are recommended to ensure reliable and simultaneous data transmission .Router ConsiderationsNot all routers support fiber connections directly. You need a router with SFP ports that can accept 100M fiber transceivers. Many modern fiber-capable routers also support higher speeds (1G or multi-gig), but for legacy or industrial setups, 100M SFP modules are sufficient . Ensure the router firmware supports the SFP module type and that the ports are configured for the correct speed and duplex mode.Practical TipsPre-manufactured fiber patch cables with the correct connectors are recommended to avoid installation errors .Verify that the fiber strands are properly terminated and polished (UPC or APC) to match the transceiver specifications .Test the link after installation to confirm both fibers are transmitting and receiving correctly.If running cables through walls or conduits, check the cable diameter and bend radius to prevent damage. By following these guidelines, your two 100-meter fiber optic cables can be effectively used to connect routers, providing a stable and high-performance network link.