Ethernet Media Converter are generally used in actual network environments where Ethernet cables cannot be covered and optical fibers must be used to extend the transmission distance. At the same time, they also play a huge role in helping to connect the last mile of optical fiber lines to metropolitan area networks and outer networks. The role of. With the optical fiber transceiver, it also provides a cheap solution for users who need to upgrade the system from copper wire to optical fiber, and for users who lack funds, manpower or time. The function of the fiber optic transceiver is to convert the electrical signal we want to send into an optical signal and send it out. At the same time, it can convert the received optical signal into an electrical signal and input it to our receiving end.