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