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Center for Nonlinear Studies |
Polarization mode dispersion (PMD) is major limiting factor for high-speed optical communication systems. The performance of these systems is described by Bit Error Rate (BER) defined as a probability of an error occurance. In this work we demonstrate that BER is a fluctuating parameter if the spacial disorder of fiber is slowly varying in time (compared with the time width). We show that probability distribution function (PDF) for BER is lognormal, and varify this theory with experimental results.