Fiber Optic Propagation Latency Calculator
Estimate one-way and round-trip propagation delay in fiber from route length and group refractive index.
Result
Formula
Calculation logicFormula definitions and substituted values.
One-way propagation delay (µs)
Fiber route length (km) * Fiber group refractive index (n_g) * 3.3356409519815
Fiber route length (km) * Fiber group refractive index (n_g) * 3.3356409519815Round-trip propagation delay (µs)
One-way propagation delay (µs) * 2
One-way propagation delay (µs) * 2Related calculators
Fiber Cable Installation Bend Radius Calculator
Calculate the minimum cable bend radius and pull-wheel diameter from the cable outside diameter and the manufacturer-specified bend-radius factor.
Open calculatorFiber Cable Procurement Length Calculator
Estimate cable reel length from route distance, percentage slack, and explicit slack reserved at splice locations.
Open calculatorFiber Chromatic Dispersion Calculator
Estimate accumulated chromatic dispersion and corresponding spectral pulse spread for a uniform fiber segment.
Open calculatorFiber Optic Conduit Fill Ratio Calculator
Calculate cable cross-sectional occupancy in an optical duct or conduit and compare it with Corning cable-count-specific fill guidance.
Open calculator