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Optical Fiber Communication Conference
We demonstrate orbital angular momentum state conversion using two 3D photonic integrated circuits for free-space communication of 20-Gb/s QPSK signals. Different combinations of OAM states show error-free performance with 379,960 bits tested.doi:10.1364/ofc.2014.th4a.1 fatcat:t6kzwsmwbjgvfotvvwcxq2se5q