Technology & Computing
Optical Fiber Attenuation Loss Calculator
Calculate total optical fiber link loss from fiber attenuation, distance, splices, and connectors.
Your inputs
Change any value to update the result instantly.
Total link loss
4.3 dB
Fiber attenuation loss
3.5 dB
Total splice loss
0.2 dB
Total connector loss
0.6 dB
Compare total loss against your transceiver's link budget (Tx power minus Rx sensitivity) to confirm margin.
Formula and working
Total loss (dB) = (attenuation dB/km × distance km) + (splices × splice loss) + (connectors × connector loss)
- 1
Collect the inputs
Fiber distance (km) = 10; Fiber attenuation (dB/km) = 0.35; Number of splices = 2; Loss per splice (dB) = 0.1; Number of connectors = 2; Loss per connector (dB) = 0.3
- 2
Apply the formula
Total loss (dB) = (attenuation dB/km × distance km) + (splices × splice loss) + (connectors × connector loss)
- 3
Result
Total link loss = 4.3 dB
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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