Optical Budget Calculator
Design & validate your PON/FTTH link: OLT → Splitters → ONU.
Link Parameters
Fiber Segments (feeder / distribution / drop)
Add all fiber runs between OLT port and ONU. Override attenuation per segment if needed.
| # | Length (km) | Atten (dB/km) | Splices (×0.1) | Connectors (×0.5) | Loss (dB) |
|---|
Splitters
Add each splitter on the path. Values are typical insertion losses.
| # | Ratio | Insertion loss (dB) |
|---|
Results
| Total fiber loss | 0.00 dB |
| Total splitter loss | 0.00 dB |
| Connectors & splices | — |
| Total path loss | 0.00 dB |
| Budget margin (limit − total) | — |
| Expected ONU Rx (OLT Tx − total) | — dBm |
| Rx margin (vs sensitivity) | — |
Typical values: 1:2≈3.5 dB · 1:4≈7.2 dB · 1:8≈10.5 dB · 1:16≈13.5 dB · 1:32≈17 dB · 1:64≈20.5 dB. Splice≈0.1 dB · Connector≈0.5 dB.