Estimation of Bep in All-optical Networks
نویسنده
چکیده
A histogram-based technique allows to estimate the bit error probability (BEP) of an optical signal suffering from distortion. At 10Gbit/s, we obtain good results even for high optical signal-to-noise ratios, i.e. for low BEP. Introduction A common technique to estimate the bit error probability (BEP) in optical communication systems uses a histogram generated by sampling the photocurrent corrupted by noise and intersymbol interference (ISI) at bit centre. From this histogram, the mean values μ1 and μ0 and the standard deviations σ1 and σ0 of marks and spaces are obtained. Assuming Gaussian noise distributions and equally likely marks and spaces, the BEP then calculated as
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