Wavelength remodulation using DPSK down-and-upstream with high extinction ratio for 10-Gb/s DWDM-passive optical networks

Chi-Wai Chow*

*Corresponding author for this work

Research output: Contribution to journalArticle

45 Scopus citations

Abstract

We propose and demonstrate a novel wavelength remodulation scheme using differential phase-shift keying (DPSK) modulation format in both downstream and upstream signals for "colorless"dense wavelength-division-multiplexed (DWDM) passive optical networks (PONs). The scheme enables high extinction ratio in both downstream and upstream remodulated signals. Error-free operation was achieved in a 20-km-reach 10-Gb/s DWDM-PON without dispersion compensation. Timing misalignment tolerance between downstream and upstream remodulated signals and maximum launched optical power for the proposed scheme are studied. Comparison with other wavelength remodulation schemes for DWDM-PONs is also performed, showing the proposed scheme can be a potential candidate for next-generation wavelength reuse DWDM-PONs.

Original languageEnglish
Pages (from-to)12-14
Number of pages3
JournalIEEE Photonics Technology Letters
Volume20
Issue number1
DOIs
StatePublished - 1 Jan 2008

Keywords

  • Differential phase-shift keying (DPSK)
  • Passive optical networks (PONs)
  • Wavelength remodulation

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