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On the optimum detection threshold for minimum bit error rate due to four-wave mixing in a WDM system

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2 Author(s)
Santu Sarkar ; Academy of Technology, P.O. Aedconagar, Hooghly-712121, West Bengal, India ; N. R. Das

In this paper, optimum detection threshold for minimum bit error rate (BER) due to four-wave mixing is calculated taking the probability distribution of power depletion as binomial and considering nonuniform channel spacing. Nondegenerate four-wave mixing has been assumed for the worst-case analysis. The effects of the number of interfering channels, receiver noise, and input power on the BER in the presence of four-wave mixing are studied. The optimum detection threshold for minimum BER is studied as a function of the number of channels. This optimum threshold significantly deviates from the conventional threshold in the Gaussian distribution approximation as the channel number increases beyond three.

Published in:

IEEE/OSA Journal of Optical Communications and Networking  (Volume:5 ,  Issue: 4 )