The single-fiber transceiver uses a single-mode optical cable, and the single-fiber transceiver uses only one core, and both ends are connected to this core. The transceivers at both ends use different optical wavelengths, so optical signals can be transmitted in one core. .
The dual-fiber transceiver uses two cores, one for sending and the other for receiving, one end is transmitting and the other end must be inserted into the receiving port, that is, the two ends must cross.
