Fig. 5: Experimental demonstration of coherent detection with an optical coherent receiver.
From: A 3.584 Tbps coherent receiver chip on InP-LiNbO3 wafer-level integration platform
a Experimental setup for coherent detection, IQM I–Q modulator, SMF single-mode fiber. b Constellation diagrams and corresponding BERs of 100 Gbaud and 128 Gbaud QPSK, 80 Gbaud, 100 Gbaud, and 128 Gbaud 16-QAM, 80 Gbaud and 100 Gbaud 32-QAM, 80 Gbaud and 100 Gbaud 64-QAM signals in B2B transmission. c Measured BERs versus the received optical power for 100 Gbaud QPSK, 100 Gbaud 16-QAM, and 100 Gbaud 32-QAM signals. d Constellation diagrams and BERs of 100 Gbaud QPSK and 100 Gbaud 16-QAM signals transmitted 1040 km and 25 km, respectively. e Constellation diagrams and B2B BERs of multichannel coherent reception
