Adaptive Channel-Matched Detection for C-Band 64-Gbit/s Optical OOK System over 100-km Dispersion-Uncompensated Link

Haide Wang, Ji Zhou, Dong Guo, Yuanhua Feng, Weiping Liu, Changyuan Yu, Zhaohui Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

14 Citations (Scopus)

Abstract

In this paper, we propose adaptive channel-matched detection (ACMD) to effectively compensate channel distortions for C-band 64-Gbit/s intensity-modulation and direct-detection (IM/DD) optical on-off keying (OOK) system over a 100-km dispersion-uncompensated link. The proposed ACMD can adaptively compensate most of the link distortions based on channel and noise characteristics, which includes a polynomial nonlinear equalizer (PNLE), a decision feedback equalizer (DFE) and maximum likelihood sequence estimation (MLSE). Based on the channel characteristics, PNLE eliminates the linear and nonlinear distortions, while the followed DFE compensates the spectral nulls caused by chromatic dispersion. Finally, based on the noise characteristics, a post filter can whiten the noise for implementing optimal signal detection using MLSE. To the best of our knowledge, we present a record C-band 64-Gbit/s IM/DD optical OOK system over a 100 km dispersion-uncompensated link achieving 7% hard-decision forward error correction limit using only the proposed ACMD at the receiver side.

Original languageEnglish
Article number9104024
Pages (from-to)5048-5055
Number of pages8
JournalJournal of Lightwave Technology
Volume38
Issue number18
DOIs
Publication statusPublished - 15 Sep 2020

Keywords

  • Adaptive channel-matched detection
  • C-band
  • chromatic dispersion
  • intensity modulation and direct detection
  • on-off keying

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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