📡 PON Link Budget Calculator
FTTH Architecture
Calculate total optical path attenuation & receiver power margin
🗺️ Network Splitting Topology
Select Deployment Design:
Symmetrical Splitters Only (Standard Centralized PLC)
Unbalanced / Tap Splitting Only (Bus/Cascaded Trail)
Hybrid Architecture (Both PLC & Unbalanced Taps)
🔦 Active Transceiver Optics
OLT Launch Power (dBm):
ONT Rx Sensitivity (dBm):
🔀 Symmetrical PLC Splitter Module
Splitter Ratio Configuration:
No PLC Splitter
1:2 (approx 3.25 dB loss)
1:4 (approx 7.00 dB loss)
1:8 (approx 10.00 dB loss)
1:16 (approx 13.50 dB loss)
1:32 (approx 17.00 dB loss)
1:64 (approx 20.00 dB loss)
Extra Splitter Loss / Excess (dB):
⚖️ Optical Tap / Unbalanced Splitter
Coupling Ratio (%):
1% / 99%
2% / 98%
3% / 97%
4% / 96%
5% / 95%
6% / 94%
7% / 93%
8% / 92%
9% / 91%
10% / 90%
12% / 88%
15% / 85%
18% / 82%
20% / 80%
22% / 78%
25% / 75%
28% : 72%
30% / 70%
35% / 65%
40% / 60%
45% / 55%
50% / 50%
Target Monitored Output Leg:
Drop Leg (Small % / High Loss Branch)
Pass-through Leg (Large % / Low Loss Express)
Additional Insertion Premium (dB):
📘 Selected Leg Insertion Loss: Loading Reference Data...
📀 Fiber Cable & Wavelength Spec
Wavelength / Preset:
1310 nm (Upstream standard - ~0.35 dB/km)
1490 nm (Downstream GPON - ~0.21 dB/km)
1577 nm (Downstream XGS-PON - ~0.20 dB/km)
Custom Values
Distance (km):
Loss Rate (dB/km):
🔗 Slices, Connectors, & Margins
Fusion Splices (Qty):
Loss per Splice (dB):
Mated Connectors (Qty):
Loss per Connector (dB):
Safety Design Margin (dB):
Other / Repair Allowance (dB):
SYSTEM PERFORMANCE SUMMARY
0.00
dB
Total Computed Loss
Calculated Rx Power:
-- dBm
Ont Rx Floor Limit:
-- dBm
Net Link Margin:
-- dB
Evaluating Configuration...
📊 Attenuation Matrix Breakdown