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Power budget
Min. 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
6072-2004
All manuals and user guides at all-guides.com
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
Typ. budget
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
at single mode (1300 nm)
1.0 dB/km
1.2 dB/km
Attenuation in splice
Fusion
0.1 dB
Mechanical
0.2 dB
Unit
1300 nm
single mode
14.6 dB
15.1 dB
12.3 dB
Attenuation
0.5 dB/km
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