Combining DPSK and duobinary for the downstream in 40-Gb/s long-reach WDM-PONs

Publication: Research - peer-reviewJournal article – Annual report year: 2013

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We propose and demonstrate combining differential phase-shift keying (DPSK) and duobinary transmission for the downstream in 40-Gb/s long-reach wavelength division multiplexed-passive optical networks (WDM-PONs) in order to provide robust transmission performance in the backhaul section and simple detection at the ONUs. DPSK is deployed in the trunk span as it provides stronger robustness to fiber nonlinearity. Duobinary is used in the access span where its higher chromatic dispersion tolerance relieves the need for dispersion compensation. All-optical multichannel modulation format conversion from DPSK to duobinary is realized in the local exchange in a single delay interferometer to reduce system cost. Single and multi-channel 80-km long-reach DPSK transmission and up to 5-km duobinary access transmission are experimentally demonstrated at 40Gb/s. The proposed approach shows great potential for future high data rate optical access networks.
Original languageEnglish
JournalOptical Fiber Technology
Volume19
Issue number2
Pages (from-to)179-184
ISSN1068-5200
DOIs
StatePublished - 2013
CitationsWeb of Science® Times Cited: 1

    Keywords

  • Wavelength division multiplexed-passive optical network (WDM-PON), Long reach-passive optical network (LR-PON), Differential phase-shift keying (DPSK), Duobinary (DB)
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