Performance Comparison of Differential 8-Ary Modulation Formats in High-Speed Optical Transmission Systems
Journal article, 2011
This paper presents back-to-back and transmission performance comparisons between single-polarization 120 Gbit/s RZ-DQP-ASK and RZ-D8PSK formats in a single-wavelength system. In the back-to-back configuration, we determine the OSNR requirements of the two formats and compare the results with those obtained analytically and numerically. In the transmission experiments, we examine signal constellations to quantify the significance of intra-channel fiber nonlinearities and investigate the BER performance of the two formats over different reaches (up to 480 km). The results show that the performance of DQP-ASK is superior to D8PSK in back-to-back configuration but is inferior over long distances.
differential detection
cross-phase modulation
D8PSK
SPM
nonlinearities
modulation format
IFWM
DQP-ASK
optical transmission
fiber
ASK
DQPSK
Author
Ekawit Tipsuwannakul
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Pontus Johannisson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Mats Sköld
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Erik Agrell
Chalmers, Signals and Systems, Kommunikationssystem, informationsteori och antenner
Magnus Karlsson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Peter Andrekson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Journal of Lightwave Technology
0733-8724 (ISSN)
Vol. 29 19 2954-2962 5971757Areas of Advance
Information and Communication Technology
Subject Categories (SSIF 2011)
Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/JLT.2011.2163495