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Opt Express. 2013 Nov 4;21(22):25788-95. doi: 10.1364/OE.21.025788.

Flexible bandwidth DGD estimation for coherent optical OFDM system.

Abstract

A Stokes vector based non-data-aided (NDA) differential group delay (DGD) estimation scheme with flexible bandwidth requirements is investigated. The scheme is demonstrated in both experiments and simulations for 40-Gb/s polarization-multiplexed coherent optical OFDM systems with up to 1000-km long haul transmission with an estimation error of less than 2.5 ps after 1000-km standard single-mode fiber transmissions.

PMID:
24216805
[PubMed]
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