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Quasi-Real-Time Optical Sampling Scheme for High-Speed Signal Acquisition and Processing

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11 Author(s)
Skold, M. ; EXFO Sweden AB, Gothenburg, Sweden ; Raybon, G. ; Adamiecki, A.L. ; Winzer, P.J.
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We present a quasi-real-time coherent sampling approach that combines the high-bandwidth and high-fidelity signal acquisition of equivalent-time optical sampling with real-time digital signal processing and equalization algorithms. The quasi-real-time concept enables feasibility studies of optical communication at symbol rates beyond the bandwidth of conventional digitizer approaches. Here we demonstrate the technique using a 107-GBd polarization-division-multiplexed quadrature phase shift keyed signal.

Published in:

Photonics Technology Letters, IEEE  (Volume:25 ,  Issue: 5 )