Soto, Marcelo A.Alem, MehdiShoaie, Mohammad AminVedadi, ArmandBrès, Camille SophieThévenaz, LucSchneider, Thomas2013-12-052013-12-052013-12-05201310.1038/ncomms3898https://infoscience.epfl.ch/handle/20.500.14299/97452WOS:000329396200016Sinc-shaped Nyquist pulses possess a rectangular spectrum, enabling data to be encoded in a minimum spectral bandwidth and satisfying by essence the Nyquist criterion of zero inter-symbol interference (ISI). This property makes them very attractive for communication systems since data transmission rates can be maximized while the bandwidth usage is minimized. However, most of the pulse-shaping methods reported so far have remained rather complex and none has led to ideal sinc pulses. Here a method to produce sinc-shaped Nyquist pulses of very high quality is proposed based on the direct synthesis of a rectangular-shaped and phase-locked frequency comb. The method is highly flexible and can be easily integrated in communication systems, potentially offering a substantial increase in data transmission rates. Further, the high quality and wide tunability of the reported sinc-shaped pulses can also bring benefits to many other fields, such as microwave photonics, light storage and all-optical sampling.Physical sciencesApplied physicsOptical physicstext::journal::journal article::research article