Quasi-Real-Time Optical Sampling Scheme for High-Speed Signal Acquisition and Processing
Journal article, 2013

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.

quadrature phase-shift keying (QPSK)

Coherent detection

digital signal processing

optical sampling

optical communication


Mats Sköld


G. Raybon

Nokia Bell Labs

A. L. Adamiecki

Nokia Bell Labs

P. J. Winzer


Nokia Bell Labs

Henrik Sunnerud


Mathias Westlund


A. Konczykowska

Joint Lab between Bell Laboratory

F. Jorge

Joint Lab between Bell Laboratory

J. Y. Dupuy

Joint Lab between Bell Laboratory

L. L. Buhl

Nokia Bell Labs

Peter Andrekson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

IEEE Photonics Technology Letters

1041-1135 (ISSN)

Vol. 25 5 504-507

Subject Categories

Other Engineering and Technologies

Physical Sciences



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9/6/2018 1