Wiki in birefringence says, "light with linear polarizations parallel and perpendicular .... the component with polarization perpendicular to this axis will be refracted as per the standard law of refraction, while the complementary polarization component will refract at a nonstandard angle determined by the angle of entry and the birefringence. The light will therefore split into two linearly polarized beams, known as ordinary and extraordinary. My understanding is that if I have a 45 degree linear polarized light (polarized photon particles?) I still end up with an o-ray photon and an e-ray photon. But as a particle a photon can not be split so I would assume the 45 degree linear polarized photon would either rotate to the vertical or horizontal linear polarization. Is this correct?