Group-velocity dispersion (GVD) is a characteristic of a dispersive medium, used most often to determine how the medium affects the duration of an optical ... Applications · Derivation · Group-delay dispersion

Group velocity dispersion is the phenomenon that the group velocity of light in a transparent medium depends on the optical frequency or wavelength.

Group velocity dispersion is the phenomenon that the group velocity of light in a transparent medium depends on the optical frequency or wavelength.

Group-velocity dispersion is an important consideration in the propagation of optical pulses. It can cause broadening of an individual pulse, as well as changes ...

Group Velocity Dispersion refers to the phenomenon where the velocity of light in a dispersive medium is dependent on its wavelength, resulting in a ...

Group velocity is similar to spectral dispersion as they both correspond to the first derivative of refractive index with respect to wavelength or frequency.

The group velocity of a wave is the velocity with which the overall envelope shape of the wave's amplitudes—known as the modulation or envelope of the wave— ... Dispersion · Relation to phase velocity...

The group velocity is the velocity with which the envelope of a weak narrow-band optical pulse propagates in a medium.

In some cases, the group velocity of light wave packets can be faster than the speed of light. This is often mistaken for faster-than-light travel in news ...

So the group velocity equals the phase velocity only when dn/dω = 0, such as in vacuum. But n usually varies with ω in materials. v v / 1 g dn. n d.