Generation and Coherent Detection of 2-µm-band WDM-QPSK Signals by On-chip Spectral Translation

We have proposed and demonstrated the generation and coherent detection of 2-µm-band I/Q modulated signals for the first time using on-chip spectral translation. 6×32 Gbaud WDM-QPSK signals exhibit BERs below the 7% HD-FEC threshold.