Fiber Type
Operating Wavelength
Link Budget Calculation Worksheet
Calculate Maximum System Attenuation
Fiber Loss at Operating Wavelength (Distance x Fiber Loss)
Connector Loss (Connector Loss x Connector Pairs)
Splice Loss (Splice Loss x Splices)
Total Cable Distance
Individual Fiber Loss (at operating wavelength)
Total Fiber Loss
Individual Connector Loss
Number of Connector Pairs
Total Connector Loss
Individual Splice Loss
Number of Splices
Total Splice Loss
Other Components
Maximum System Attenuation
km
dB/km
dB
dB
dB
dB
dB
dB
dB
Calculate Link Loss Budget
Determine System Gain (Avg. Transmitter Power - Receiver Sensitivity)
Power Penalties (Operating Margin + Receiver Power Penalties + Repair Margin # Splices at 0.3dB each)
Determine Link Loss Budget (System Gain - Power Penalty)
Average. Transmitter Power
Receiver Sensitivity
System Gain
Operating Margin
Receiver Power Penalties
Repair Margin
Total Power Penalty
System Gain
Total Power Penalty
Total Link Loss Budget
dBm
-9
dBm @ 10 BER
dB
dB
dB
dB
dB
dB
dB
dB
Verify Adequate Power (Total Link Loss Budget - Total System Attenuation)
Verify Performance
Total Link Loss Budget
dB
Maximum System Attenuation
dB
System Performance Margin*
dB
* System Performance Margin must be
greater than 0 dB in order for the
system to operate using the specified
electronics.
Appendices
UNIT 5
