Group Velocity
The velocity of propagation of an envelope produced when an Electromagnetic Wave is modulated by, or mixed with, other waves of different frequencies.
Note: The group velocity is the velocity of information propagation and, loosely, of Energy propagation.
2. In optical Fiber transmission, for a particular mode, the reciprocal of the rate of change of the Phase Constant with respect to angular frequency.
Note: The group velocity equals the Phase Velocity if the phase constant is a linear function of the angular frequency, = 2f , where f is the frequency.
3. In optical-fiber transmission, the velocity of the modulated optical power.
Related Terms
Group Delay,
Group Index,
Group Velocity,
Phase Velocity,
Secondary Mode Group,
Velocity Matched Photodetectors,
Velocity of light,
External links for Group Velocity
Group Velocity on Wikipedia
Group Velocity on Google
Group Velocity on Yahoo!
Group Velocity on Answers
Group Velocity on The Free Dictionary
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