ASE

Bit rate & transmitter-receiver technology (e.g., FEC)=>SNRmin

=>

Assuming signal power PL=4dBm, amplifier gain G=25dB, excess noise factor nsp=2.5,, h?B0=-58dBm w/ carrier freq. ? and optical BW B0

• With FEC, SNRmin=20dB => M ? 10

• Without FEC, SNRmin=25dB => M ? 3

w/ unity gain

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