Table 21. Optical Power Per Splice - IBM 8265 Site Preparation Manual

Optical Power Loss Through Splicing
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IBM 8265: Planning and Site Preparation Guide
If a fiber cable breaks, it is usually repaired by splicing the broken ends together. Two
types of splice are normally used: mechanical and fusion. A fusion splice results in
lower power loss, but requires expensive equipment. A mechanical splice is simple to
perform when fusion splicing is not available.
If you repair a broken cable using either type of splice, make sure that the power loss
in the cable does not exceed the value for "Maximum Received Power" in the SC
Transceiver specifications as given in Chapter 7. Table 21 shows the average power
loss for each splice type according to cable size.
When calculating the total power loss for ATM connections in your network, you
should use the Maximum Loss values whenever possible as a "worst case" scenario.
If a Maximum Loss value is not given for a certain splice type and cable size, use the
Average Loss value.

Table 21. Optical Power per Splice

Splice Type Cable Size (microns)
Fusion 62.5 to 62.5
50 to 50
9 to 9
Mechanical 62.5 to 62.5
50 to 50
9 to 9
Maximum Loss Average Loss
— 0.15 dB
— 0.15 dB
— 0.15 dB
1.0 dB 0.4 dB
1.0 dB 0.4 dB
1.0 dB 0.4 dB