Abstract
Polarization division multiplexing (PDM) has been proposed as a scheme for
increasing data rates in fiber optic communication systems. In the PDM
scheme, the use of two orthogonal polarizations as alternative data paths is
a promising approach in terms of doubling the information rate relative to
conventional schemes. However, due to the severe distortion caused by the
propagation medium, especially the Polarization mode dispersion (PMD), the
development of receiver compensation methods are critical for the deployment
of PDM based transceivers. This article proposes a receiver compensation
method for high symbol rate fiber optic communication links, where the two
data streams sent through orthogonal polarizations are mixed by the fiber
channel not only in space but also in time. The proposed receiver algorithm
adaptively recovers the original pair of data streams from their space-time
mixtures. We also provide simulation results for an end-to-end fiber
communication link to illustrate the performance of the proposed
approach.
© 2010 IEEE
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