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eng.fiber-optic-loss-budget Calculator
Calculates the total optical link loss budget from fibre attenuation, connector losses, splice losses, and required power margin. Standard single-mode fibre attenuation is 0.2 dB/km at 1550 nm — a 100 km link needs 20 dB of power margin for fibre alone.
Inputs
Transmitter Power Dbm
Rate of energy transfer (W). P = V×I (electrical). P = F×v (mechanical). 1 horsepower ≈ 746 W.
Receiver Sensitivity Dbm
Reference formula or conversion factor shown for context.
Connector Loss Db
Reference formula or conversion factor shown for context.
Connector Pairs
Count of items or occurrences.
Fiber Loss Db Km
Reference formula or conversion factor shown for context.
Span Km
Distance between supports (m). Longer spans experience larger bending moments — structural adequacy must be rechecked.
Results
link margin (dB)
Sample size or count used in the calculation.
total path loss (dB)
The combined total across all inputs and components.
available link budget (dB)
Sample size or count used in the calculation.
connector loss total
The combined total across all inputs and components.
fiber loss total
The combined total across all inputs and components.
link status
Current state of the system, process, or metric — typically pass/fail, healthy/warning/critical, or a descriptive classification.