A quarter wave plate 202 and {TAIL ~ the polarization beam splitter} 203 splits the composite light beam to two separate light beams as a function of the handedness of {HEAD ~ the circularly polarized light} 
A quarter wave plate 202 and { TAIL ~ the polarization beam splitter } 203 splits the composite light beam to two separate light beams as a function of the handedness of { HEAD ~ the circularly polarized light }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD