What is an SFP optical module?
SFP optical module is a one billion - bit electrical signals into optical signal interface device, is the industry standard of small pluggable gigabit optical transceiver module, integrated pluggable in switches, routers and other network equipment, media converter SFP ports, used to connect to the light or copper cables for data transmission network, we can usually in Ethernet switches, routers, firewalls, and find it in the network interface card.
SFP optical module has the following four advantages:
1. Support hot plug, can reduce the installation maintenance management time;
2. Ports are flexible;
3. Rugged design enhances reliability;
4. Support digital optical monitoring (DOM) function.
SFP optical module application
1. Short distance network cabling
1000Base-T SFP optical module supports 10/100/1000 adaptive and Auto MDI/MDIX, which can be used with 5 classes of unshielded network jumpers. The transmission distance is up to 100m.
The 1000Base-SX SFP optical module is compatible with the IEEE 802.3Z 1000Base-SX standard and can be used in a 50m /62.5 m multimode fiber link with a maximum transmission range of up to 550m.
2. Long distance network cabling
The 1000base-EX and 1000base-ZX SFP optical modules can be used together with single-mode optical fiber and are suitable for long-distance network transmission, of which the transmission distance of 1000base-EX SFP optical module can reach 40km and that of 1000base-ZX SFP optical module can reach 80km.
Note: When single-mode fiber (SMF) is used for short distances, an optical attenuator is inserted in the link to avoid overload of the receiver.
Conclusion
SFP port can support SFP port module and SFP port module. SFP port and SFP port module have high flexibility and compatibility in practical application, and are the best scheme for gigabit Ethernet.
