Estimate optical link loss and generate a quotation-ready RFQ summary for fiber optic cable, patch cord, pigtail, adapter, MPO/MTP, PLC splitter, attenuator and general optical link projects. For detailed OLT-to-ONU PON power windows, use the dedicated FTTH / PON Splitter Loss Calculator.
Use it when the customer needs fiber cable, patch cords, pigtails, adapters or installation accessories but has incomplete project details.
Use it for rough insertion-loss screening and RFQ collection. Actual multimode reach must still follow transceiver standard reach.
Use it only for passive loss and product information. For OLT/ONU received power, use the dedicated PON splitter calculator.
| Item | Default Planning Value | RFQ Note |
|---|---|---|
| OS2 attenuation | 0.35 dB/km @ 1310 nm, 0.25 dB/km @ 1490 nm, 0.22 dB/km @ 1550 nm, 0.23 dB/km @ 1577 nm | Use datasheet values for final project design. |
| OM3 / OM4 / OM5 attenuation | 3.0 dB/km @ 850 nm, 1.0 dB/km @ 1300 nm | Multimode reach is often limited by bandwidth and transceiver standard reach. |
| Connector pair | 0.20 / 0.35 / 0.50 dB per mated pair | Connector type and polish should be confirmed for quotation. |
| MPO / MTP connection | 0.25 / 0.35 / 0.75 dB per mated MPO connection | Confirm MPO gender, polarity, fiber count and loss grade. |
| PLC splitter | 1:2 = 3.8 dB, 1:4 = 7.4 dB, 1:8 = 10.7 dB, 1:16 = 13.9 dB, 1:32 = 17.2 dB, 1:64 = 20.8 dB | For detailed PON ODN power budget, use the dedicated PON calculator. |
| Status | Margin Condition | Meaning | Recommended Action |
|---|---|---|---|
| Pass | Remaining margin ≥ engineering reserve | The RFQ assumptions look reasonable for early screening. | Confirm connector type, polish, cable length, jacket and factory test requirements. |
| Warning | Margin is positive but below reserve, or topology is unusual | The link may work, but field variation can create risk. | Reduce connectors, use low-loss components, or increase available optical budget. |
| Fail | Estimated loss exceeds available budget | The RFQ assumptions should be revised before quotation. | Review route length, split ratio, transceiver budget and passive component count. |
