There are many types of fiber optic transceivers, and their types also change according to different classification methods.
According to the nature of the optical fiber, it can be divided into multi-mode optical fiber transceivers and single-mode optical fiber transceivers. Due to the different optical fibers used, the distances that the transceivers can transmit are also different. The general transmission distance of multi-mode transceivers is between 2 kilometers and 5 kilometers, while the range covered by single-mode transceivers can be from 20 kilometers to 120 kilometers;
According to the required optical fibers, it can be divided into single-fiber optical fiber transceivers: the received and sent data are transmitted on one optical fiber; dual-fiber optical fiber transceivers: received and sent data are transmitted on a pair of optical fibers.
According to the working level/rate, it can be divided into single 10M, 100M fiber optic transceivers, 10/100M adaptive fiber optic transceivers and 1000M fiber optic transceivers. According to the structure, it can be divided into desktop (stand-alone) fiber optic transceivers and rack-mounted fiber optic transceivers. The desktop fiber optic transceiver is suitable for a single user, such as the uplink of a single switch in the corridor. Rack-type (modular) fiber optic transceivers are suitable for multi-user aggregation. For example, the central computer room of a community must meet the uplink of all switches in the community.
According to the network management, it can be divided into network-managed fiber optic transceivers and unmanaged fiber-optic transceivers.
According to the management type, it can be divided into, unmanaged Ethernet fiber optic transceiver: plug and play, set the working mode of the electrical port through the hardware DIP switch. Managed Ethernet Optical Transceiver: Supports carrier-class network management
According to the type of power supply, it can be divided into built-in power optical transceiver: the built-in switching power supply is a carrier-grade power supply; external power optical transceiver: external transformer power supply is mostly used in civil equipment. The advantage of the former is that it can support an ultra-wide power supply voltage, better achieve voltage regulation, filtering and equipment power protection, and reduce external failure points caused by mechanical contact; the latter has the advantage of small size and cheap equipment.
According to the working mode, the full duplex mode means that when the transmission and reception of data are split and transmitted by two different transmission lines, both parties of the communication can send and receive operations at the same time. Such transmission The mode is full-duplex, and the full-duplex mode does not need to switch the direction, so there is no time delay caused by the switching operation;
Half duplex means that the same transmission line is used for both reception and transmission. Although data can be transmitted in both directions, both parties cannot send and receive data at the same time. This transmission method is half-duplex. When the half-duplex mode is adopted, the transmitter and receiver at each end of the communication system are transferred to the communication line through the receiving/transmitting switch to switch directions, so a time delay will occur.
