Optical sinc-shaped Nyquist pulses of exceptional quality

Sinc-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.


Published in:
Nature Communications, 4, 2898
Year:
2013
ISSN:
2041-1723
Keywords:
Note:
http://actu.epfl.ch/news/ten-times-more-throughput-on-optic-fibers/
Laboratories:




 Record created 2013-12-05, last modified 2018-10-07

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