Abstract
In this paper we determine the performance of intensity-modulation/direct-detection optical communication system for various values of laser extinction ratio and bit rate. The bit error probability dependencies on optical signal peak power are given for optimally chosen threshold. We determine the numerical values of required peak average optical signal power in order to reach the bit error probability 10 -9 , and present the exact penalties due to finite extinction ratio. The receiver with PIN photodiode is observed in the analysis.
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