Optical waveguide arrangement with improved capacity

An optical waveguide arrangement comprising an in-coupling structure and an optical waveguide, wherein

• the in-coupling structure is arranged to diffract an incoming light signal having a spectral characteristic in visible spectrum into a first version of the light signal with a first polarization and a second version of the light signal with a second polarization, wherein the first polarization is at least partially orthogonal compared to the second polarization, and the in-coupling structure is further arranged to diffractively couple the first and the second versions of the light signal into the optical waveguide;
• and
• the optical waveguide is arranged to convey the first version of the light signal with the first polarization and the second version of the light signal with the second polarization towards an eye, to generate a waveguide-based display wherein a relative change in intensity of the first version of the light signal is the same, or essentially the same, as a relative change in intensity of the second version of the light signal, when the first and the second versions of the light signal propagate from the in-coupling structure to an out-coupling structure,
• wherein the out-coupling structure is arranged to compensate for rotation of polarization states of the first version and the second version of the light signal, said rotation occurring when the first version and the second version of the light signal are conveyed in the optical waveguide, and
• wherein the waveguide is configured so that total end-to-end channels are polarization insensitive.