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We propose a multi-layer network with in-service traffic re-grooming. The combination of colorless multi-degree ROADM and ODU cross-connect with ODU reallocation functionality can offer significant cost reduction with no impact of re-grooming on services.
This paper overviews future optical networks over the next few decades from the carrier viewpoint considering future advanced optical network technologies.
Using a commercially-ready 40-lambda DWDM system, RZ-DQPSK is confirmed to offer excellent DGD tolerance, up to 25 ps, through high PMD installed DSFs.
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