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Calcimator

PON Splitter Calculator

Calculate passive optical network splitter loss, link margin, and bandwidth per user for GPON, XGS-PON, and EPON deployments.

Inputs

dBm
dBm
dB

Results

Splitter Insertion Loss

16.05 dB

ONU Received Power

-16.05 dBm

Link Margin

11.95 dB

Total Link Loss21.05 dB
Link Viable (1=Yes)1
Max Split Ratio256:1
Max Addl Fiber Loss16.95 dB
Down BW per User77.8 Mbps
Up BW per User38.9 Mbps
How to Use This Calculator
  1. Enter the Split Ratio (1:N) for your passive splitter (common: 1:32 for GPON, 1:64 for XG-PON).
  2. Enter OLT Transmit Power (dBm) and ONU Receiver Sensitivity (dBm) from the transceiver specs.
  3. Set Fiber + Connector Loss (dB) for the outside plant between OLT and ONUs.
  4. Select PON Type (GPON, EPON, XGS-PON, or NG-PON2) to set the downstream/upstream data rates.
  5. Review Splitter Insertion Loss, ONU Received Power (dBm), Link Margin (dB), and per-user bandwidth (Down/Up BW per User in Mbps).
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Formula

Splitter Loss = 10·log₁₀(N) + Excess Loss

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