This calculator helps you translate drawings and field realities—route length, splice counts, connector points, and splitter cascades—into a quick link‑budget check. Start with the optics: use the OLT transmit power and the ONU minimum sensitivity from vendor datasheets. Instantly compute insertion loss, power at each subscriber port, and fade margin for PLC and FBT splitters — including dual cascade configurations. Covers GPON (1490 nm / 1310 nm), EPON, and RF video overlay (1550 nm). Also useful as an optical power budget calculator, FTTH link budget tool, and. By dividing a single optical signal from a central Optical Line Terminal (OLT) into multiple outputs for Optical Network Terminals (ONTs) at users' homes, splitters eliminate the need for dedicated fibers to each residence—slashing infrastructure costs while scaling network reach. Fields auto-fit: 3 columns on large screens, 2 on medium, 1 on mobile. Typical attenuation differs by wavelength; adjust if needed. Common: +1 to +7 dBm (depends on optics class).
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