Universal Virtual Lab: A Fast and Accurate Simulation Tool for Wideband Nonlinear DWDM Systems

David Dahan*, Michael Zarubinsky, Yunhua Liang, Ori Golani, Mark Shtaif

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We introduce the concept of the universal virtual lab, an extension to the virtual lab platform of [Golani et al. 2016], enabling a fast and accurate simulation of wideband nonlinear DWDM systems. The universal virtual lab is compliant with non-ideal transmitter and receiver architectures, distributed optical filters in the optical link, inter-channel stimulated Raman scattering, and it provides accurate performance predictions even when adaptive equalization methods are applied. In comparison with the conventional full-bandwidth split step Fourier transform method, we show with different test scenarios that the universal virtual lab provides accuracy errors below 0.1 dBQ and 0.09 bit/4D-symb in Q-factor and GMI assessments respectively, with runtime speedup factors exceeding 1000. We also report performance assessments in an ultra-wideband (11 THz) C+L system and discuss equalization gain under different compensation scenarios. The estimated speedup factor with respect to the full-bandwidth split step Fourier transform method is assessed to be greater than 35,000.

Original languageEnglish
Pages (from-to)2441-2455
Number of pages15
JournalJournal of Lightwave Technology
Issue number8
StatePublished - 15 Apr 2022


  • Fiber nonlinear optics
  • nonlinear interference
  • nonlinearity compensation
  • optical fiber communication
  • stimu- lated Raman scattering
  • time-varying inter symbol interference
  • ultra-wideband systems


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