Analysis of in-band crosstalk-crosstalk beat noise and obtaining Bit Error Rate in a WDM receiver

Abstract

In this paper, the influence of the In-band crosstalk-crosstalk beat noise on the Bit Error Rate (BER) of a preamplified WDM receiver is investigated assuming Gaussian approximation. From the analysis and comparison it is evident that in case of many interferers the crosstalk-crosstalk beat noise can significantly affect the value of BER and modify the optimum detection threshold for obtaining minimum BER. Bit Error Rate including the presence of crosstalk-crosstalk beat noise are calculated and the effect of the variation of number of interfering channels have been investigated which is essential for improvement of the practical receiver design.