D. Beltrame et al., Impact of polarisation mode dispersion on the statistics of Q factor in optical transmission systems, ELECTR LETT, 36(16), 2000, pp. 1400-1402
The authors calculate the probability density function of the Q factor for
optically amplified transmission IM-DD systems, in the presence of a random
icity given by the polarisation mode dispersion. Theoretical and experiment
al results obtained in a soliton field trial 500km long at 40Gbit/s show a
satisfactory agreement.