Fiber Optic Calculator
FO v1.0
SMF-28 (0.25 dB/km)
0.25
0.1
0.3
0.5
0.7
1.0
10.0 km
0.1
10
40
80
120
200
1550 nm
850
1310
1490
1550
1625
10 Gbps
0.1
1
10
100
400
800
18.0
0.5
5
10
18
30
Link Attenuation
2.5 dB
Dispersion
180 ps/nm
Max Distance
80.0 km
📊
Fiber Link Analysis
📡
Attenuation:
2.5 dB
Dispersion:
180 ps/nm
Fiber Type
SMF-28
Wavelength
1550 nm
Data Rate
10 Gbps
Link Budget
17.5 dB
📋
Fiber Reference
Type
Attenuation
Dispersion
SMF-28
0.25 dB/km
18 ps/nm/km
NZ-DSF
0.35 dB/km
5 ps/nm/km
MMF 50/125
0.5 dB/km
2 ps/nm/km
MMF 62.5/125
0.7 dB/km
1 ps/nm/km
📐
Formula
Attenuation = Attenuation/km × Distance
Total link attenuation in dB
Dispersion = D(λ) × L × Δλ
Max Distance = Budget / Attenuation/km
Link budget includes transmitter power and receiver sensitivity
📋
Fiber Guide
- 1 Select fiber type or enter attenuation
- 2 Set link distance and wavelength
- 3 Enter data rate for dispersion check
- 4 Calculate attenuation and dispersion