Optical transceivers are generally used in practical network environments where Ethernet cables cannot cover and optical fibers must be used to extend transmission distances, and they also play a huge role in helping to connect the last mile of optical fiber to the metropolitan area network and beyond. effect. With fiber optic transceivers, it also provides an inexpensive solution for users who need to upgrade their systems from copper to fiber, for those who lack capital, 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.