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Coherent Detection only by 2-D Photodetector Array: A Discreteness-aware Phase Retrieval Approach

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A simple and spatially-flexible coherent receiver without local lights, optical hybrids, or spatial de-multiplexers is experimentally demonstrated; 2×10-Gbaud SDM QPSK signals were detected only by 2-D arrayed photodetectors based on a novel phase-retrieving technique.

© 2019 The Author(s)

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