An apparatus and method for routing optical signals in which {HEAD ~ at least one demultiplexer} receives and demultiplexes {TAIL ~ an incoming wavelength division} multiplexed optical signal into n individual channels 
demultiplexes
An apparatus and method for routing optical signals in which { HEAD ~ at least one demultiplexer } receives and demultiplexes { TAIL ~ an incoming wavelength division } multiplexed optical signal into n individual channels
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH