A degenerate parametric amplifier at the transmitter can improve the power efficiency of a small-signal phase-modulated optical transmission system by acting as a phase amplifier. For a parametric power gain H, the total transmitter power requirement is reduced by a factor of H(2) compared with that of a conventional phase-modulated system.
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| http://dx.doi.org/10.1364/ol.25.000649 | DOI Listing |
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