Nonlinear frequency division multiplexing with b-modulation: Shifting the energy barrier

Tao Gui, Gai Zhou, Chao Lu, Alan Pak Tao Lau, Sander Wahls

Research output: Journal article publicationJournal articleAcademic researchpeer-review

58 Citations (Scopus)


The recently proposed b-modulation method for nonlinear Fourier transform-based fiber-optic transmission offers explicit control over the duration of the generated pulses and therewith solves a longstanding practical problem. The currently used b-modulation however suffers from a fundamental energy barrier. There is a limit to the energy of the pulses, in normalized units, that can be generated. In this paper, we discuss how the energy barrier can be shifted by proper design of the carrier waveform and the modulation alphabet. In an experiment, it is found that the improved b-modulator achieves both a higher Q-factor and a further reach than a comparable conventional b-modulator. Furthermore, it performs significantly better than conventional approaches that modulate the reflection coefficient.

Original languageEnglish
Pages (from-to)27978-27990
Number of pages13
JournalOptics Express
Issue number21
Publication statusPublished - 15 Oct 2018

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


Dive into the research topics of 'Nonlinear frequency division multiplexing with b-modulation: Shifting the energy barrier'. Together they form a unique fingerprint.

Cite this