A DPSK Receiver With Enhanced CD Tolerance Through Optimized Demodulation and MLSE

A DPSK Receiver With Enhanced CD Tolerance Through Optimized Demodulation and MLSE

We experimentally demonstrate that a differential phase-shift keying (DPSK) receiver employing a Mach-Zehnder delay interferometer (MZDI) with a bit delay of less than one bit combined with maximum likelihood sequence estimation can considerably enhance the tolerance to chromatic dispersion (CD). Fu...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:IEEE photonics technology letters 2008-05, Vol.20 (10), p.818-820
Hauptverfasser: Alfiad, M., van den Borne, D., Napoli, A., Koonen, A.M.J., de Waardt, H.
Format: Artikel
Sprache:eng
Schlagworte:
Chromatic dispersion (CD)
Delay
Delay estimation
Demodulation
differential phase-shift keying (DPSK)
Differential quadrature phase shift keying
Dispersions
Interferometers
Mach-Zehnder delay interferometer (MZDI)
Maximum likelihood estimation
maximum likelihood sequence estimation (MLSE)
Optical attenuators
Optical interferometry
Optical modulation
Optical noise
Optical receivers
Photonics
Receivers
Sampling
Signal to noise ratio
Tolerances
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We experimentally demonstrate that a differential phase-shift keying (DPSK) receiver employing a Mach-Zehnder delay interferometer (MZDI) with a bit delay of less than one bit combined with maximum likelihood sequence estimation can considerably enhance the tolerance to chromatic dispersion (CD). Furthermore, we analyze the impact of sampling phase and optimize the MZDI bit delay for 10.7-Gb/s nonreturn-to-zero (NRZ)-DPSK demodulation. Our investigation shows that a 4000-ps/nm CD tolerance at 2-dB penalty is feasible for 10.7-Gb/s NRZ-DPSK.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2008.921825