Title :
Quasi-Real-Time Optical Sampling Scheme for High-Speed Signal Acquisition and Processing
Author :
Skold, M. ; Raybon, G. ; Adamiecki, A.L. ; Winzer, P.J. ; Sunnerud, Henrik ; Westlund, Mathias ; Konczykowska, Agnieszka ; Jorge, Filipe ; Dupuy, J. ; Buhl, Lawrence L. ; Andrekson, Peter A.
Author_Institution :
EXFO Sweden AB, Gothenburg, Sweden
Abstract :
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.
Keywords :
high-speed optical techniques; light polarisation; multiplexing; optical communication; optical information processing; optical signal detection; quadrature phase shift keying; signal sampling; bit rate 107 Gbit/s; equalization algorithms; equivalent-time optical sampling; high-bandwidth signal acquisition; high-fidelity signal acquisition; high-speed signal acquisition; optical communication; polarization-division-multiplexed quadrature phase shift keyed signal; quasireal-time optical coherent sampling; real-time digital signal processing; Bandwidth; High speed optical techniques; Optical attenuators; Optical modulation; Optical polarization; Optical receivers; Optical transmitters; Coherent detection; digital signal processing; optical communication; optical sampling; quadrature phase-shift keying (QPSK);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2239984
