Optical Link Budget Calculator

Enter your link parameters to instantly compute total loss, power margin and feasibility — and whether EDFA amplification is required.

Distance (km)

Fiber Attenuation (dB/km) SMF: 1310nm≈0.35, 1550nm≈0.25

Connector Pairs

Loss per Pair (dB)

Splices

Loss per Splice (dB)

Mux + Demux Loss (dB) Only for passive WDM; 0 for direct

Tx Power (dBm)

Rx Sensitivity (dBm)

EDFA Gain (dB) 0 if no amplifier

Cable Loss—

Connector Loss—

Splice Loss—

Mux/Demux—

Total Loss—

Power Budget—

Power Margin—

Enter parameters to compute.

Results are engineering estimates; final designs are confirmed by OTSLink engineering review.