Network fiber optic transceivers - have been widely used for their advantages such as large information capacity, good confidentiality, light weight, small size, no repeater, and long transmission distance. Optical fiber transceivers use fiber as a high-speed propagation medium It solves the transmission problems of Ethernet very well. According to the fiber, it can be divided into multimode fiber transceiver and single mode fiber transceiver.

Single-mode SM fiber: It has a much smaller cable core bundle and can only allow one beam to propagate through the cable core bundle at the same time. Single-mode fibers are designed to maintain the spatial and spectral integrity of each optical signal over long distances, allowing more information to be transmitted.

Multimode MM fiber: It has a large cable core bundle that allows hundreds of rays to propagate through the fiber at the same time. Multimode fiber is mainly used in short distance systems (below 2km).

The choice of single-mode fiber modem and multi-mode fiber modem: The price of single-mode fiber modem is generally slightly higher than the price of multi-mode fiber modem, but due to the more and more extensive use of single-mode fiber, the price of single-mode fiber is higher. The decrease in amplitude is now lower than the price of multi-mode fiber. If the transmission distance is not very far, it is recommended to use a multi-mode fiber modem, but if the distance exceeds a certain distance, it is recommended to use a single-mode fiber modem, because the price of the entire system is can drop.