On the Quaternary Level Spacing Signalling Optimisation for Increasing the Transmission Distance in Optical Communication Systems
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چکیده
Four-level (quaternary) signalling in optical communication systems is investigated and the optimisation of quaternary signal level spacing is carried out considering signalamplified spontaneous emission beat noise dominance. The optimised quaternary signal is propagated through an optical dispersive fibre and sensitivity improvements can be found for shorter transmission distances and non-zero extinction ratio.
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تاریخ انتشار 2001