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In this work, we experimentally implement an adaptive polarization demultiplexing (PolDemux) technique based on the representation of the state of polarization (SOP) of the signal in the Stokes space in bidirectional ultra-dense wavelength-division-multiplexed (U-DWDM) optical metro networks. BER measurement is used to assess the quality of DP-QPSK and DP-16QAM signals in back-to-back and after 80...
In this paper, we firstly review the progress in ultra-dense wavelength division multiplexing passive optical network (UDWDM-PON), by making use of the key attributes of this technology in the context of optical access and metro networks. Besides the inherit properties of coherent technology, we explore different modulation formats and pulse shaping. The performance is experimentally demonstrated...
Access networks have stringent requirements on many vectors, including cost and flexibility, due to the plurality of end user types that use in the network. In this work we will address potential paths for the optimization of the access requirements and potential parameters for functional virtualization. Several demonstrations of physical restrictions and implications of flexibility at physical layer...
Future optical access networks can take advantage of Free Space Optics in heterogeneous environments, relying on several advanced techniques which provide high capacity and make the transmission robust and flexible. In this work, several experimental scenarios are tested and presented, showing the potential of integrating optical wireless in fiber based scenarios for broadband multi service delivery.
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