Insert a compatible SFP transceiver into the converter's port, making sure it matches the network's media type and speed. Then, connect one end of the fiber cable to the transceiver and the other to the appropriate port on a switch, router, or another media converter. There are also fiber-to-fiber versions that translate between different fiber types, wavelengths, or distances. I suggest you avoid such setups. Mixing. In this application example, a network requires multimode to single-mode fiber conversion to connect two in-building multimode networks over a single-mode fiber link, which supports longer distances than multimode fiber. That is because SMF and MMF have.