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