SFP
SFP
Speed: Up to 1 Gbps
The SFP transceivers support: [1]
- multi-mode dual fiber (MMF)
- single-mode dual fiber (SMF)
- single-mode single-fiber (SMF)
- Coarse Wave Division Multiplexing
- unshielded twisted pair (UTP) copper cabling
Connector: LC, RJ45
SFP+
Speed: Up to 16 Gbit/s (usually 10 Gbit/s)
The SFP+ transceivers support: [2]
- multi-mode dual fiber (MMF)
- single-mode dual fiber (SMF)
- single-mode single-fiber (SMF)
- Coarse Wave Division Multiplexing
Connector: LC, RJ45
Fiber Distance Terms
Multimode Fiber
SR - Short Range
SR stands for Short Range, and these transceivers support a link length of 300m over multi-mode fiber and use 850nm lasers.
LRM - Long Reach Multimode
LRM stands for Long Reach Multimode, and these transceivers support a distance up to 220m over multi-mode fiber and use 1310nm lasers.
Single-mode Fiber
LR - Long Reach
LR stands for Long Reach, and these transceivers support a distance up to 10km over single mode fiber and use 1310nm lasers.
ER - Extended Reach
reach of 40 kilometers over-engineered links and 30 km over standard links
ZR - Extended Reach
Also stands for Extended Reach. Unofficial format. 80km distance. [3]