Optical sampling to enhance Nyquist-shaped signal detection under limited receiver bandwidth

Zihan Geng, Deming Kong, Valery Rozental, Arthur James Lowery, Bill Corcoran

Research output: Contribution to journalArticleResearchpeer-review


Insufficient receiver bandwidth destroys the orthogonality of Nyquist-shaped pulses, generating inter-symbol interference (ISI). We propose using an optical pre-sampler to alleviate the requirement on the receiver bandwidth through pulse re-shaping. Experiments and simulations using an optically shaped 40-Gbaud Nyquist-shaped on-off-keying signal (N-OOK) show receiver sensitivity improvements of 4- and 7.1-dB under 18- and 11-GHz receiver electrical bandwidths, respectively.

Original languageEnglish
Pages (from-to)24007-24017
Number of pages11
JournalOptics Express
Issue number17
Publication statusPublished - 19 Aug 2019

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