Simple all optical modulation format conversion from 4x12.5 Gbps NRZ-OOK to 50 Gbps PDM RZ-QPSK using cross-phase modulation in a bidirectional scheme
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2017 ◽
Vol 35
(19)
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pp. 4219-4226
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2019 ◽
Vol 37
(16)
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pp. 3925-3931
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