From eq 3 and 7, the circularly polarized light can be generated by super position of two orthogonal polarization of same amplitude and frequency but having a phase gap of .

Superposition of two circularly polarized light:

Let us consider a situation where right circularly (eq 3) and left circularly polarized light (eq 7) are superimposed. The resultant field is

                     ................................... (8)

The equation (8) represent as plane wave. Thus a plane wave can be synthesised by super position of two oppositely circular polarized light of equal amplitude and frequency.

Elliptically polarized light

Considering the general expression for electric field of a plane wave propagating along z axis

..................... (9)

under the situation , The x and y components of electric fields are given by