... components of the EDFA, enlarge 1550nm optical signal.4. Adopt 980nm or 1480nm high linearity, optical isolation,5. The DFB, thermoelectric cooling DFB ... EDFA, could be comparable with the so-called low-power optical amplifier. It can make the system to obtain superior CNR ... ItemFWA-1550TWavelength (nm)1545~1555Optical input power (dBm)-5~+10Nominal optical input power (dBm)+3NF(dB) (+3 dBm,@1550nm)3.8 ...