Thursday, December 13, 2012

SFP+ Cable Distances defined by Core Size and Band Width


Did you know a standard SFP+ SR supports a link length of only 26m on standard Fiber Distributed Data Interface (FDDI)-grade multimode fiber (MMF). Using 2000MHz*km MMF (OM3), links up to 300m link lengths are possible. Using 4700MHz*km MMF (OM4), up to 400m link lengths are actually possible.

Distances of MM SFP+ 10G SR's

Core Size (Microns)
62.5
62.5
50.0
50.0
50.0
50.0
Modal Bandwidth (MHz*km)***
160 (FDDI)
200 (OM1)
400
500 (OM2)
2000 (OM3)
4700 (OM4)
Cable Distance
26m
33m
66m
82m
300m
400m

Distances of LRM's

62.5
50.0
50.0
G.652
500
400
500
-
220m
100m
220m
300m

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