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Engineering Calculator

Link Loss Budget Calculator

Calculate optical power budget for fiber links

Calculators

How This Calculator Works

1

Enter the total fiber link length in kilometers

2

Specify fiber attenuation coefficient (0.35 dB/km for G.652D @ 1310nm)

3

Count the number of fusion splices and connectors in the link

4

Get total loss budget and recommendation for transceiver selection

Link Loss Budget Calculator

Calculate the total optical loss for a fiber link to verify transceiver compatibility and identify over-budget links.

Total fiber length from transmitter to receiver
G.652D: 0.35 @ 1310nm, 0.20 @ 1550nm
Each fusion splice adds ~0.1 dB loss
Each connector pair adds ~0.5 dB loss
Recommended: 3 dB for outdoor links
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Enter parameters and click Calculate

Transceiver Loss Budget Reference

Typical optical power budgets for common transceiver types

Transceiver Type Typical Budget Max Range
1G SFP (1310nm)≤ 11 dB~10 km
1G SFP LX (1310nm)≤ 15 dB~20 km
10G SFP+ (1310nm)≤ 12 dB~10 km
25G SFP28 (1310nm)≤ 10 dB~10 km

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