A cost-effective 310-km SSMF unrepeatered optical link employing off-the-shelf EDFAs, 1st-order DRAs, and a ROPA is experimentally demonstrated. An iterative optimization process enabled a 12.8-Tbps net transmission (37.5-GHz spaced 128 channels × 100 Gbps).

© 2020 The Author(s)

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