Influence of Pulse Shape in 112-Gb/s WDM PDM-QPSK Transmission

Author

Torrengo, Enrico ; Makovejs, Sergejs ; Millar, David S. ; Fatadin, Irshaad ; Killey, Robert I. ; Savory, Seb J. ; Bayvel, Polina

Author_Institution

Dipt. di Elettron., Politec. di Torino, Torino, Italy

Volume

22

Issue

23

fYear

2010

Firstpage

1714

Lastpage

1716

Abstract

In this work, we investigated the influence of pulse shape on the transmission performance of polarization-division-multiplexed quadrature-phase-shift keying modulation format at 112 Gb/s in a ten-channel wavelength-division-multiplexed (WDM) transmission experiment with 50-GHz channel spacing. Nonreturn-to-zero (NRZ) and return-to-zero with 50% duty cycle (RZ50) were compared. RZ50 was found to have better performance in both single-channel and WDM experiments. Compared with NRZ, the use of RZ50 yielded an increase in reach from 6560 to 7760 km in the single-channel experiment (corresponding to an increase in reach by 18%); in the case of WDM. the reach was extended from 5920 to 7360 km (corresponding to a 24% increase in reach).

Keywords

quadrature phase shift keying; wavelength division multiplexing; WDM PDM-QPSK transmission; bit rate 112 Gbit/s; frequency 50 GHz; nonreturn-to-zero; polarization-division-multiplexed quadrature-phase-shift keying modulation; pulse shape; wavelength-division-multiplexed; Digital signal processing; Optical fiber communication; Optical fibers; Optical signal processing; Phase shift keying; Wavelength division multiplexing; Advanced modulation formats; coherent optical communications; digital signal processing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2010.2082520

Filename

5593198