Photonic chip-based simultaneous multi-impairment monitoring for phase-modulated optical signals

Trung D. Vo, Jochen Schröder, Mark D. Pelusi, Stephen J. Madden, Duk Yong Choi, Douglas A.P. Bulla, Barry Luther-Davies, Benjamin J. Eggleton

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)


    We report the first experimental demonstration of simultaneous multi-impairment monitoring of phase-modulated 40 Gbit/s nonreturn to zero differential phase-shift keying (NRZ-DPSK) and 640 Gbit/s return-to-zero (RZ)-DPSK optical signals. Our approach exploits the femtosecond response time of the Kerr nonlinearity in a centimeter-scale, highly nonlinear, dispersion engineered chalcogenide planar waveguide to perform THz bandwidth RF spectrum analysis. The features observed on the radio-frequency (RF) spectrum are directly utilized to perform simultaneous group velocity dispersion and in-band optical signal-to-noise ratio (SNR) monitoring. We also numerically investigate the measurement accuracy of this monitoring technique, highlighting the advantages, and suitability of the chalcogenide rib waveguide.

    Original languageEnglish
    Article number5593860
    Pages (from-to)3176-3183
    Number of pages8
    JournalJournal of Lightwave Technology
    Issue number21
    Publication statusPublished - 2010


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