A method in accordance 7 further comprising using {TAIL ~ a separate low noise amplifier} to amplify 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 {HEAD ~ the method} 
A method in accordance 7 further comprising using { TAIL ~ a separate low noise amplifier } to amplify 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 { HEAD ~ the method }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL 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 OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD