Similarly, {HEAD ~ the invention} is not limited to {TAIL ~ two outputs}: three can be served by providing the same number of multiplexers and as many SOAs for each separated channel 
is not limited to
Similarly , { HEAD ~ the invention } is not limited to { TAIL ~ two outputs } : three can be served by providing the same number of multiplexers and as many SOAs for each separated channel
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH