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Power budget
Fibre
820 nm
50/125
10.7 dB
62.5/125
14.5 dB
100/140
20.6 dB
9/125
"Min. budget" states the minimum guaranteed power budget. Experience shows however that the
typical value is in the range of the indicated "Typ. budget".
Attenuation in fibre cable
The values below can differ depending on quality and manufacturer of the fibre optic
cable.
Fibre
50/125 µm
62.5/125 µm
100/140 µm
9/125 µm
Attenuation in connectors
0.2–0.4 dB
16
Min. budget
Unit
1300 nm
single mode
8.1 dB
11.6 dB
6.3 dB
Attenuation
at 820 nm
3.0 dB/km
3.5 dB/km
4.0 dB/km
Fibre
820 nm
50/125
16.6 dB
62.5/125
18.6 dB
100/140
25.9 dB
9/125
Attenuation
at 1300 nm
1.0 dB/km
1.2 dB/km
Attenuation in splice
Fusion
Mechanical
Typ. budget
Unit
1300 nm
single mode
14.6 dB
15.1 dB
12.3 dB
Attenuation
at single mode (1300 nm)
0.5 dB/km
0.1 dB
0.2 dB
6073-2041
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