Digital Signal Processing for Short-Reach Optical Communications: A Review of Current Technologies and Future Trends

Kangping Zhong, Xian Zhou, Jiahao Huo, Changyuan Yu, Chao Lu, Pak Tao Lau

Research output: Journal article publicationReview articleAcademic researchpeer-review

262 Citations (Scopus)


Driven primarily by cloud service and data-center applications, short-reach optical communication has become a key market segment and growing research area in recent years. Short-reach systems are characterized by direct detection-based receiver configurations and other low-cost and small form factor components that induce transmission impairments unforeseen in their coherent counterparts. Innovative signaling and digital signal processing (DSP) play a pivotal role in enabling these components to realize their ultimate potentials and meet data rate requirements in cost-effective manners. This paper presents an overview of recent DSP developments for short-reach communications systems and discusses future trends.
Original languageEnglish
Pages (from-to)377-400
Number of pages24
JournalJournal of Lightwave Technology
Issue number2
Publication statusPublished - 15 Jan 2018


  • Digital signal processing
  • direct detection
  • optical communications

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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