The method 13, wherein calculating destructive interference conditions comprises calculating scalar products of {TAIL ~ electrical field vectors} of the two s polarized waves and of {HEAD ~ the two p polarized waves} 
The method 13 , wherein calculating destructive interference conditions comprises calculating scalar products of { TAIL ~ electrical field vectors } of the two s polarized waves and of { HEAD ~ the two p polarized waves }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD