Chromatic Dispersion Estimation in Digital Coherent Receivers

Author

Soriano, Ruben Andres ; Hauske, Fabian N. ; Gonzalez, Neil Guerrero ; Zhang, Zhuhong ; Ye, Yabin ; Monroy, Idelfonso Tafur

Author_Institution

DTU Fotonik, Tech. Univ. of Denmark, Lyngby, Denmark

Volume

29

Issue

11

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

1627

Lastpage

1637

Abstract

Polarization-diverse coherent demodulation allows to compensate large values of accumulated linear distortion by digital signal processing. In particular, in uncompensated links without optical dispersion compensation, the parameter of the residual chromatic dispersion (CD) is vital to set the according digital filtering function. We present different non-data-aided (blind) CD estimation methods for single-carrier transmission under implementation constraint conditions such as bandwidth limitation and sampling rate. The estimation performance for various modulation formats is compared with respect to precision and robustness for a wide range of combined channel impairments.

Keywords

FIR filters; demodulation; light polarisation; optical dispersion; optical filters; optical information processing; optical receivers; quadrature phase shift keying; accumulated linear distortion; bandwidth limitation; channel impairments; chromatic dispersion estimation; digital coherent receivers; digital filtering function; digital signal processing; modulation formats; optical dispersion compensation; polarization-diverse coherent demodulation; sampling rate; single-carrier transmission; Cost function; Estimation; Filter banks; Finite impulse response filter; Matched filters; Optical filters; Chromatic dispersion (CD); digital coherent receiver; optical performance monitoring (OPM);

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

Conference_Location

4/21/2011 12:00:00 AM

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2011.2145357

Filename

5753903