Multiple input detection and digital signal processing for uncooled ONUs in a TWDM-PON with a commercial WDM demultiplexer

Jie Liu, Zhen Gao, Changjian Guo, Chao Lu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


A simple uplink transmission scheme with multiple-input direct detection and digital signal processing has been proposed and experimentally demonstrated for the time and wavelength division multiplexed passive optical networks (TWDM-PONs), to allow wavelength drift of lasers at the uncooled optical network units (ONUs). In our experiment, after passing by the commercial 100-GHz WDM demultiplexer, three 10-Gb/s NRZ signals with minimum signal wavelength separation of 50-GHz can be recovered successfully after 50-km standard single-mode fiber (SSMF) transmission. Simulation results are also obtained to analysis the receiver sensitivity at different wavelength separations and discuss methods improving power budget.
Original languageEnglish
Pages (from-to)428-433
Number of pages6
JournalOptical Fiber Technology
Issue number4
Publication statusPublished - 1 Jan 2014


  • Digital signal processing
  • Multiple-input detection
  • Time and wavelength division multiplexed passive optical networks (TWDM-PONs)
  • Uncooled optical network units (ONUs)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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