Answers are grounded in this paper and cite their sources.
The Letter shows that externally-modulated coherent AM optical links are limited by the third-order nonlinearity of the electrooptical modulator (EOM) and the EOM nonlinearity reduces the dynamic range by 5–19 dB from the theoretical limit. When the received optical power is less than ̃1 mW, these links have a better dynamic range than conventional direct detection links.
No takes yet. Share an insight, caveat, or question.
Fong et al. (1993) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: