Types of SFP Transceivers for Multi-mode, Single-mode, Copper and WDM

SFP transceivers are available with a variety of transmitter and receiver types, allowing users to select the appropriate transceiver for different applications.

SFP transceiver modules are commonly available in below categories

1.For Multi-mode fiber, with black or beige extraction lever.

SX - 850 nm, for a maximum of 550 m at 1.25 Gbit/s (Gigabit Ethernet) or 150m at 4.25 Gbit/s (Fibre Channel).

2.For Single-mode fiber, with blue extraction lever

LX - 1310 nm, for distances up to 10 km.

EX - 1310 nm,for distances up to 40 km.

ZX - 1550 nm, for distances up to 80 km.

BX - 1490 nm 1310nm, for distances up to 10 km.

1550 nm 40 km (XD), 80 km (ZX), 120 km (EX or EZX).

3.For Copper twisted pair cabling

1000BASE-T - these modules incorporate significant interface circuitry and can only be used for Gigabit Ethernet, as that is the interface they implement. They are not compatible with (or rather: do not have equivalents for) Fibre channel or SONET.

4.For WDM (Wavelength Division Multiplex) system

BiDi SFP (Bidirectional SFP) for bi-directional traffic on a single fiber. Coupled with WDM (Wavelength Division Multiplexing), these double the traffic density of fiber links.

CWDM SFP and DWDM SFP transceivers at various wavelengths achieving various maximum distances.