High-Spectral-Efficiency 114-Gb/s Transmission Using PolMux-RZ-8PSK Modulation Format and Single-Ended Digital Coherent Detection Technique

Author

Zhou, Xiang ; Yu, Jianjun ; Qian, Dayou ; Wang, Ting ; Zhang, Guodong ; Magill, Peter D.

Author_Institution

AT&T Labs.-Res., Middletown, NJ

Volume

27

Issue

3

fYear

2009

Firstpage

146

Lastpage

152

Abstract

Employing spectrally efficient PolMux-RZ-8PSK modulation format and single-ended digital coherent detection technique, we demonstrate 8 times 114-Gb/s DWDM transmission over 640 km of SSMF on a 25-GHz grid with record spectral efficiency of 4.2 bit/s/Hz, utilizing no optical dispersion compensation or Raman amplification. We show that the distortion caused by the direct square-law detection of the signal component with single-ended photo detection can be effectively mitigated by a novel DSP algorithm.

Keywords

optical distortion; optical fibre communication; optical fibre polarisation; optical modulation; optical receivers; optical signal detection; phase shift keying; photodetectors; wavelength division multiplexing; DSP algorithm; DWDM transmission; PolMux-RZ-8PSK modulation format; SSMF; bit rate 114 Gbit/s; dense wavelength division multiplexing; direct square-law detection; distance 640 km; frequency 25 GHz; high-spectral-efficiency; long-haul transmission; photo detection; signal distortion component mitigation; single-ended digital coherent detection technique; standard single mode fiber; Digital signal processing; High speed optical techniques; Optical distortion; Optical interferometry; Optical modulation; Optical transmitters; Phase detection; Phase frequency detector; Stimulated emission; Wavelength division multiplexing; 8PSK; Coherent; digital; fiber; modulation format; optical transmission; spectral efficiency;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2008.2008661

Filename

4785296