Fig. 8 | Nature Communications

Fig. 8

From: Bidirectional wavelength-division multiplexing transmission over installed fibre using a simplified optical coherent access transceiver

Fig. 8

Performance comparison of our PI coherent receiver and a direct detection (APD) receiver. BER vs optical received power for 10.7 Gb/s Alamouti-coded OFDM QPSK received using the PI coherent receiver (demonstrated in this article) and 10 Gb/s TDM-OOK received using a direct-detection (APD) receiver (demonstrated by Veen et al.)26

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