OPTICAL-FIBER - SFP CheatSheet

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SFP And SFP+

SFP Optical Modules
Code Speed Wavelenght Distance
SX 1.25G 850nm LC 550m
LX 1.25G 1310nm LC 10km/20km
EX 1.25G 1550nm LC 40km
ZX 1.25G 1550nm LC 80km
SFP+ Optical Modules
Code Speed Wavelenght Distance
SR 10G 850nm LC 300m
LR 10G 1310nm LC 10km/20km
ER 10G 1550nm LC 40km
ZR 10G 1550nm LC 80km


Patch Cords

  • SX to SX optical module use MM multimode fiber, MM normally use OM1 (62.5/125um) or OM2 (50/125um) patch cord.
  • LX to LX optical module use SM singlemode fiber, SM normally use OS2 (9/125um) fiber optical patch cord.
  • SR to SR optical module use MM multimode fiber, MM normally use OM3 (50/125um) patch cord.
  • LR to LR optical module use SM singlemode fiber, SM normally use OS2 (9/125um) fiber optical patch cord.
  • QSFP SR4 TO QSFP SR4 use MM multimode, use MPO OM3 (50/125um) patch cord.


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