Low-Complexity Compensation of SOA Nonlinearity for Single-Channel PSK and OOK

Author

Vacondio, Francesco ; Ghazisaeidi, Amirhossein ; Bononi, Alberto ; Rusch, Leslie Ann

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. Laval, Quebec City, QC, Canada

Volume

28

Issue

3

fYear

2010

Firstpage

277

Lastpage

288

Abstract

Carrier density fluctuations in semiconductor optical amplifiers (SOAs) impose penalties on phase-shift keying (PSK) signals due to nonlinear phase noise (NLPN), and on-off keying (OOK) signals due to self-gain modulation. In this paper, we propose a simple scheme to equalize the impairments induced by SOA nonlinearities, derived from the small signal analysis of carrier density fluctuations. We demonstrate via simulation almost complete cancelation of the NLPN added by a saturated SOA on a differential PSK signal. We demonstrate via both simulations and experiment the effectiveness of the method for mitigation of nonlinear distortions imposed by SOAs on an OOK signal.

Keywords

amplitude shift keying; carrier density; differential phase shift keying; optical communication equipment; optical distortion; optical saturation; phase noise; semiconductor optical amplifiers; SOA nonlinearity; carrier density fluctuations; differential PSK signal; low-complexity compensation; nonlinear distortions; nonlinear phase noise; on-off keying; phase-shift keying; saturated SOA; self-gain modulation; semiconductor optical amplifiers; small signal analysis;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2009.2036868

Filename

5340539