Fiber design and pathway planning
Open a completed optical calculator, or review the shared fiber reference data.
Dedicated fiber tools
Draw a route or choose a focused calculation. Review each tool’s assumptions.
Draw a point-to-point route with locations, cable lengths, connections and splices. Review directional launch power, receiver input and margin; export PDF and SVG drawings.
Open designerCompare transmitter power, receiver sensitivity, fiber loss, connections, passive devices, and engineering margin.
Open calculatorConvert optical power without mixing logarithmic and linear units.
Open calculatorCalculate balanced division loss, documented excess or insertion loss, cascaded paths, and optional output power.
Open calculatorSolve the loss-limited fiber distance with equipment budget, fixed loss, attenuation, reserve, and an optional reach limit visible.
Open calculator| Profile | Wavelength | Maximum |
|---|---|---|
| Multimode premises at 850 nm | 850 nm | 3.5 dB/km |
| Multimode premises at 1300 nm | 1300 nm | 1.5 dB/km |
| Single-mode premises at 1310 nm | 1310 nm | 1 dB/km |
| Single-mode premises at 1550 nm | 1550 nm | 1 dB/km |
| Single-mode outside plant at 1310 nm | 1310 nm | 0.5 dB/km |
| Single-mode outside plant at 1550 nm | 1550 nm | 0.5 dB/km |
Use the Fiber Optic Link Budget Calculator for end-to-end loss, receiver power, and margin. Use the dBm and mW Converter for optical-power units. Use the Splitter Loss Calculator for one or more balanced splitter stages. Use Maximum Distance when the question is how far the remaining attenuation budget can support. Additional calculators appear only after they are complete and verified.
No. They are conservative FOA / NECA planning maxima. Project specifications, selected cable data, component ratings, and measured results govern.
No. Each calculator will answer one field question clearly and transfer compatible inputs when that reduces duplicate entry.