PMD-induced penalty statistics in fiber links

PMD monitoring in traffic-carrying optical systems and its statistical analysis

“…1 in [13] where the statistics of PMD-induced system impairments was numerically simulated. Since the eye-closure penalty in the receiver depends on the alignment between the SOP of the optical signal and the PSP of the optical fiber [14,15], a Rayleigh distribution was expected. From in-service system monitoring point of view, our coherent detection technique evaluates τ p which has a mean value of p τ .…”

A simple analytical model for PMD temporal evolution

“…While the statistical properties of PMD in the frequency domain has been studied extensively in the past decade, both theoretically and experimentally [1], the time dynamics of PMD have attracted more attention recently as a key to the predicting of the outage statistics [2], expected duration of the outages, and feedback times for various PMD mitigation schemes [3]. While theoretically there is no unified "microscopic" theory for the PMD evolution, the experimental difficulty is that the relevant time dynamics can't be emulated in the lab, they must be observed in the field for long periods of time [4].…”

Αυτορυθμιζόμενοι Εξισωτές Διασποράς Τρόπων Πόλωσης Για Σύμφωνα Οπτικά Τηλεπικοινωνιακά Συστήματα Υψηλής Φασματικής Απόδοσης

“…Figure48 Outage probability as a function of the normalized mean DGD for a CMA-based equalizer with 5 taps (crosses), 10 taps (dots), 15 taps (circles) and 20 taps (squares) per FIR filter for 1 dB (dash-dot line), 2 dB (dashed line) and 3 dB (solid line) threshold, respectively. The "uncompensated case is represented for 1-tap polarization demultiplexer (dotted line) and with the theoretical prediction formula using Antonelli's model[107] (triangles). Only the first-order PMD equalization for 1 dB margin (dash-dot line) with a 15-tap CMAbased equalizer (rhombs).…”