Light is often diagrammed as a wave. How inefficient! There would be no reason for light to suddenly change direction and oscillate.
The energy would be quickly consumed.



Rather, Light spirals around its mass. From the side ( as in a measurement from a 1 dimensional instrument) it appears to be a wave, but in reality it is a moving orbit pair. Ejected from its source by explosive force.
The part of light that moves is electric, the part that rotates is magnetic, creating the electromagnetic field.

Polarisation
The first question is "What about polarisation?" The forcing of light through a narrow slit. The spiral orbit does not have to be symmetrical. Just as planetary orbits are eccentric, so is light orbit.