Ethernet Physical Layer Standards
.
Fiber Physical
Layer
Standards
Medium
850 nm light (inexpensive)
Multimode fiber
Maximum
Run
Length
Speed
1000BASE-SX
275 m
1 Gbps
1000BASE-SX
500 m
1 Gbps
1000BASE-SX
220 m
1 Gbps
1000BASE-SX
550 m
1 Gbps
62.5
microns
160
MHz-km
62.5
200
50
400
50
500
The 1000BASE-SX optical fiber standard dominates trunk links todayS means that the standard uses short wavelength light (850 nm)
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