Dispersion value of standard single-mode fiber
For a source of spectral width Δλ, the effective value of dispersion parameter becomes D = SΔλ. This document outlines the specifications for a single-mode optical fiber and cable designed for use around the 1310 nm zero-dispersion wavelength, suitable for both the 1310 nm and 1550 nm regions, and compatible with analogue and digital transmission. Chromatic dispersion is a measure of how the time, τ, taken by an optical pulse to travel along a fibre varies with the wavelength, λ, of the light making up the pulse. Because there is only one mode in single-mode fibre, there is no multimode distortion but pulses are spread by dispersion.
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