A method for switching and redirecting {HEAD ~ optical wavelengths} in {TAIL ~ an optical network}, comprising: 
in
A method for switching and redirecting { HEAD ~ optical wavelengths } in { TAIL ~ an optical network } , comprising :
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH