Small form-factor pluggable transceiver Types

SFP transceivers are available with a variety of transmitter and receiver types, allowing users to select the appropriate transceiver for each link to provide the required optical reach over the available optical fiber type (e.g. multi-mode fiber or single-mode fiber). Optical SFP modules are commonly available in several different categories:850 nm 550 m multi-mode fiber (SX),1310 nm 10 km single-mode fiber (LX),1490 nm 10 km single-mode fiber (BS-D),1550 nm 40 km (XD), 80 km (ZX), 120 km (EX or EZX)],1490 nm 1310 nm (BX), Single Fiber Bi-Directional Gigabit SFP Transceivers.

SFP transceivers are also available with a copper cable interface, allowing a host device designed primarily for optical fiber communications to also communicate over unshielded twisted pair networking cable or transport SDI video signal over coaxial cable. There are also CWDM and single-fiber "bi-directional" (1310/1490 nm Upstream/Downstream) SFPs.[1][2]

SFP transceivers are commercially available with capability for data rates up to 4.25 Gbit/s. An enhanced standard called SFP+ supports data rates up to 10.0 Gbit/s.

July 16, 2011

Continue