A method in accordance 7 further comprising using {HEAD ~ a separate low noise amplifier} to amplify {TAIL ~ the incoming optical signal}, the semiconductor optical amplifiers and the low noise amplifier having a combined gain sufficient to fully compensate for insertion losses introduced by the method 
to amplify
A method in accordance 7 further comprising using { HEAD ~ a separate low noise amplifier } to amplify { TAIL ~ the incoming optical signal } , the semiconductor optical amplifiers and the low noise amplifier having a combined gain sufficient to fully compensate for insertion losses introduced by the method
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL 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 OTH OTH OTH OTH OTH