35 AM-VSB TV channels distribution with high signal quality using a 1480 nm diode-pumped erbium-doped fiber postamplifier

In the system considered, the postamplifier, with an output power of +9.6 dBm, did not degrade the very high linearity of the isolated distributed-feedback (DFB) laser transmitter. A 51.2-dB weighted signal-to-noise ratio was obtained, and an optical power budget of 16 dB was achieved with a weighted signal-to-noise ratio higher than 48 dB. A larger power budget with a higher signal-to-noise ratio (SNR) is possible with an increase of DFB laser output power and erbium-doped fiber amplifier (EDFA) saturated output power, and with a minimization of the EDFA noise contribution.<
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