Alishahi, FatemehFallahpour, AhmadMohajerin-Ariaei, AmirhosseinCao, YinwenKordts, ArnePfeiffer, Martin Hubert PeterKarpov, MaximAlmaiman, AhmedLiao, PeichengZou, KaihengLiu, CongWillner, Ari N.Tur, MosheKippenberg, Tobias J.Willner, Alan E.2019-06-182019-06-182019-06-182019-04-0110.1364/OL.44.001852https://infoscience.epfl.ch/handle/20.500.14299/157734WOS:000462839600083Sinc-shaped temporal pulse trains have a spectrally efficient, rectangular Nyquist spectrum. We demonstrate the simultaneous and reconfigurable optical generation of multiple Nyquist-shaped wavelength-division-multiplexed (WDM) channels having temporal sinc-shaped pulse trains as data carriers. The channels are generated through the insertion of coherent lines using cascaded continuous-wave amplitude modulation around the spectral lines of a microresonator-based Kerr optical frequency comb. For each of nine Kerr frequency comb lines, we insert sub-groups of uniform and coherent lines to generate nine WDM channels. The deviations from ideal Nyquist pulses for the nine channels at repetition rates of 6 and 2 GHz are between 4.2%-6.1% and 2%-4.5%, respectively. Each WDM channel is modulated with on-off keying (OOK) at 6 Gbit/s. In addition, we show the reconfigurability of this method by varying the number of WDM channels, the generated sinc-shaped pulse train repetition rates, the duration, and the number of zero-crossings. (C) 2019 Optical Society of AmericaOpticsOpticstransmissiongbit/sofdmtext::journal::journal article::research article