On the Complexity Reduction of the Second-Order Volterra Nonlinear Equalizer for IM/DD Systems

Nikolaos Panteleimon Diamantopoulos, Hidetaka Nishi, Wataru Kobayashi, Koji Takeda, Takaaki Kakitsuka, Shinji Matsuo

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

To cope with the various nonlinear signal distortions in intensity-modulation/direct-detection transmission systems, a theoretical analysis on the Volterra nonlinear equalizer (VNLE) is provided, focusing on computational complexity aspects. The analysis yields a simple reduced-complexity scheme for the second-order VNLE (R2-VNLE) based on a performance-complexity tradeoff. An experimental verification is performed with single-sideband 28-GBaud PAM-4 signals, generated by an electroabsorption modulated distributed-feedback laser, over transmission distances of up to 80 km of standard single-mode fiber in the C-band. A comparison of the results for different equalization schemes, including a signal-signal beat interference mitigation technique, shows superior performance for the R2-VNLE.

Original languageEnglish
Article number8594656
Pages (from-to)1214-1224
Number of pages11
JournalJournal of Lightwave Technology
Volume37
Issue number4
DOIs
Publication statusPublished - 2019 Feb 15
Externally publishedYes

Fingerprint

pulse amplitude modulation
signal distortion
C band
distributed feedback lasers
tradeoffs
sidebands
synchronism
interference
modulation
fibers

Keywords

  • Direct detection
  • intensity modulation
  • nonlinear equalization
  • optical interconnects
  • PAM-4
  • Volterra filter

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

On the Complexity Reduction of the Second-Order Volterra Nonlinear Equalizer for IM/DD Systems. / Diamantopoulos, Nikolaos Panteleimon; Nishi, Hidetaka; Kobayashi, Wataru; Takeda, Koji; Kakitsuka, Takaaki; Matsuo, Shinji.

In: Journal of Lightwave Technology, Vol. 37, No. 4, 8594656, 15.02.2019, p. 1214-1224.

Research output: Contribution to journalArticle

Diamantopoulos, Nikolaos Panteleimon ; Nishi, Hidetaka ; Kobayashi, Wataru ; Takeda, Koji ; Kakitsuka, Takaaki ; Matsuo, Shinji. / On the Complexity Reduction of the Second-Order Volterra Nonlinear Equalizer for IM/DD Systems. In: Journal of Lightwave Technology. 2019 ; Vol. 37, No. 4. pp. 1214-1224.
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