As an example, we can consider a MacNeille polarizing beam splitter which separates
unpolarized light into two orthogonal linear polarized components. The beam splitter is
made from two similar glass prisms which have a dielectric coating applied at the
interface between the two. Table 1 shows a typical 7 layer stack which is 98% reflective
for S polarized light and greater than 90% transmissive for P polarized light over the
visible wavelength band.