Once you understand that picture, you can clearly understand circular polarization.
The solution is something completely different, called circular polarization.
This brings the two components back into their initial phase relationship, reestablishing the selected circular polarization.
Each mode radiates separately and combine to produce circular polarization.
For example, circular polarization is used to minimize the interference caused by rain.
The calculation is performed with all conditions of rectilinear or circular polarization.
Normally, a much smaller fraction of circular polarization is found in starlight.
It may also be possible to have counterrotating beams with circular polarization of different handedness.
These turn out to be quite useful when carrying electromagnetic waves with a rotating, circular polarization to them.
Both circular and linear polarization of light from the Sun has been measured.