Title :
Data-Aided Chromatic Dispersion Estimation for Polarization Multiplexed Optical Systems
Author :
Do, Cuong C. ; Tran, An V. ; Zhu, Chen ; Chen, Simin ; Anderson, Trevor ; Hewitt, Don ; Skafidas, Efstratios
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Melbourne, VIC, Australia
Abstract :
We propose a full transmission link chromatic dispersion (CD) estimation technique for polarization-multiplexed coherent optical single carrier system using data-aided channel estimation and least square quadratic fit. New training sequences based on Chu sequence and Golay complementary pair are designed and compared for estimation performance against the ideal full-level Chu sequence for both QPSK and 16-QAM systems. The proposed technique is demonstrated in a 40-Gb/s coherent polarization multiplexed optical system over 2080-km fiber transmission for QPSK format and 80-Gb/s system over 1800-km fiber for 16-QAM format to verify its accurate and robust estimation performance.
Keywords :
channel estimation; least squares approximations; light coherence; optical fibre dispersion; optical fibre polarisation; quadrature amplitude modulation; quadrature phase shift keying; 16-QAM systems; Chu sequence; Golay complementary pair; QPSK format; bit rate 40 Gbit/s; bit rate 80 Gbit/s; coherent optical single carrier system; coherent polarization multiplexed optical system; data-aided channel estimation; data-aided chromatic dispersion estimation; distance 1800 km; distance 2080 km; fiber transmission; full transmission link; least square quadratic fit; polarization multiplexed optical systems; Channel estimation; Estimation; Optical fiber polarization; Phase shift keying; Training; Transfer functions; Chromatic dispersion (CD); channel estimation; data aided;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2012.2222365
