Scalable WDM phase regeneration in a single phase-sensitive amplifier through optical time lenses

Pengyu Guan*, Francesco Da Ros, Mads Lillieholm, Niels-Kristian Kjøller, Hao Hu, Kasper Meldgaard Røge, Michael Galili, Toshio Morioka, Leif Katsuo Oxenløwe

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Optical data regeneration is attractive, due to its potential to increase transmission reach and data throughput in communication systems, and several interesting proposals have been made. However, efficient and scalable solutions for regeneration of multiple parallel wavelength channels have been elusive, constituting a key challenge, which must be overcome for optical regeneration to have any prospect of being adapted in actual communication systems. Here we report a scalable wavelength-division multiplexing (WDM) regeneration scheme for phase only regeneration, which satisfies the multichannel requirement, using a set of optical time-lens-based Fourier processors combined with a single phase-sensitive amplifier (PSA). We describe the concept theoretically, and experimentally demonstrate simultaneous regeneration of 16 WDM channels with 50-GHz spacing, each carrying 10-Gbit/s DPSK phase-modulated data. The proposed scheme relies on ultrafast broadband optical processing and is inherently scalable in modulation speed and channel number.
Original languageEnglish
Article number1049
JournalNature Communications
Issue number1
Number of pages11
Publication statusPublished - 2018


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