{HEAD ~ A wavelength controlled optical true time delay generator} utilizes {TAIL ~ passive switching} to direct an optical beam to different length paths depending on the input wavelength 
utilizes
{ HEAD ~ A wavelength controlled optical true time delay generator } utilizes { TAIL ~ passive switching } to direct an optical beam to different length paths depending on the input wavelength
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH