Athanasios Vgenis

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—Polarization division multiplexed (PDM) quadra-ture phase-shift keying (QPSK) coherent optical systems employ blind adaptive linear electronic equalizers for polarization-mode dispersion (PMD) compensation. In this paper, we compute the performance of various adaptive, fractionally spaced, feed-forward electronic equalizers, using the outage probability as(More)
We compare three quadrature imbalance compensation algorithms for coherent PDM-QPSK systems, including a novel, blind, adaptive equalizer. We show that dedicated quadrature imbalance compensation is mandatory and cannot be performed by regular distortion mitigating equalizers. 1. Introduction Coherent phase-diversity receivers suffer from quadrature(More)
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