Automatic DGD and GVD compensation at 640 Gb/s based on scalar radio-frequency spectrum measurement

Yvan Paquot, Jochen Schröder, Evarist Palushani, Richard Neo, Leif Katsuo Oxenløwe, Steve Madden, Duk-Yong Choi, Barry Luther-Davies, Mark D. Pelusi, Benjamin J. Eggleton

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    We demonstrate what we believe to be the first real-time impairment-cancellation system for group-velocity dispersion (GVD) and differential group delay (DGD) for a 640  Gb/s single-channel signal. Simultaneous compensation of two independent parameters is demonstrated by feedback control of separate GVD and DGD compensators using an impairment monitor based on an integrated all-optical radio-frequency (RF) spectrum analyzer. We show that low-bandwidth measurement of only a single tone in the RF spectrum is sufficient for automatic compensation for multiple degrees of freedom using a multivariate optimization scheme.
    Original languageEnglish
    JournalApplied Optics
    Issue number9
    Pages (from-to)1919-1927
    Publication statusPublished - 2013

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    This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.


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