Animation of modulation and dispersion

At left, one sees a modulated signal being generated as a sum of the carrier (green), and lower (red) and upper (blue) sideband frequencies. Each carrier/sideband component is represented by a rotating arrow ("phasor"), of which the length indicates its amplitude and the angle its phase; the vertical component of a phasor is the component's current value.
At right, these signals are shown propagating in space, both the individual sideband components and their sum.
Controls at the bottom allow setting the signal and modulation frequencies, modulation format, and propagation speed and dispersion.

Time:    fps

Display settings:

Simulation speed:

Infinite history
Fix carrier phasor
Stack phasors

Show envelope:    

Show phase/frequency:    

Signal settings:

Carrier frequency:
Modulation frequency:

Modulation type:

Modulation waveform:

Modulation depth:

Number of modulation sideband harmonics:

Propagation settings:

Phase velocity:

No dispersion

Group velocity:

Group velocity dispersion: