2 - 10 ONline Ethernet 10BASE-FL Installation and Operation Guide
Table 2-4 shows the range of loss and the typical loss as a result of splice.
Optical Fiber Loss
Even though fiber optic cable can carry light signals over a long distance,
optical power loss is a significant factor. Check your cable manufacturer's
rating of the loss characteristic of your fiber cable to determine the actual
loss.
Table 2-5 shows typical power losses in fiber optic cables.
Table 2-4. Connector and Splice Insertion Loss
Connector Type
Range of Loss Per
Pair (dB)
Typical Loss (dB)
SMA Patch Panel 1.0 to 3.0 2.0
ST or FC Patch Panel 0.1 to 0.75 0.5
Splice Type Range of Loss (dB) Typical Loss (dB)
Fusion 0.01 to 0.1 0.05
Mechanical 0.2 to 1.0 0.5
Table 2-5. Typical Fiber Loss Characteristics
Fiber Type @ 850 nM Loss (dB/km) Typical Loss (dB/km)
50/125 micron 3 to 5 3.75
62.5/125 micron 3 to 5 3.75
85/125 micron 3 to 6 4.0
100/140 micron 3 to 6 5.0
