{HEAD ~ Combinations} of optically coupled Generalized Mach Zehnder Interferometers result in {TAIL ~ switches} of greater switching capacity than an isolated GMZI 
result in
{ HEAD ~ Combinations } of optically coupled Generalized Mach Zehnder Interferometers result in { TAIL ~ switches } of greater switching capacity than an isolated GMZI
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH