This reference is really quite good, but unfortunately, does not include spectral as well as temporal photon plots. The photon is an oscillation in space and time and so photon volume is likewise an oscillation in space and time.
Is that okay? Classically, there is no classical photon, only semiclassical. But photon volume only makes quantum sense as electric field amplitude and polarization or as the orthogonal magnetic field amplitude and polarization.
For an unpolarized single photon, the electric field has both polarizations with uncorrelated phase and so photon electric field volume is an nice average of those oscillations.
For a linearly polarized photon, there is much less width to the photon volume, but of course, never a zero width. Therefore all photons have an electric field volume as well as a magnetic field volume that oscillates in time.