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Performance Calculations of Optically Preamplified IM-DD Receivers

The performance of optically preamplified IM-DD receivers is investigated, in terms of Sensitivity and BER, employing a statistic model which is more accurate than the customary Gaussian approximation. 
 
 
 
A comparison between the two statistics' predictions is presented. 
 
 
 
The implications of practical receivers on the performance of the system have been analysed in detail. Particular care has been taken to investigate the penalties arising from a non-optimum threshold setting of the comparator.