Investigation of Transparency of FWM in SOA to Advanced Modulation Formats Involving Intensity, Phase, and Polarization Multiplexing

Author

Contestabile, Giampiero ; Banchi, Luca ; Presi, Marco ; Ciaramella, Ernesto

Author_Institution

Scuola Superiore Sant´´Anna, Univ. of Pisa, Pisa, Italy

Volume

27

Issue

19

fYear

2009

Firstpage

4256

Lastpage

4261

Abstract

We experimentally investigate the real transparency of four-wave mixing (FWM) in semiconductor optical amplifiers to modulation formats involving intensity, phase, and polarization multiplexing. We exploit two different FWM polarization-independent schemes (that make use of two pumps) to wavelength-convert 40 Gb/s single-polarization and 80 Gb/s polarization-multiplexed signals in case of both nonreturn-to-zero ON -OFF keying (NRZ-OOK) and NRZ differential phase-shift keying modulation formats. We found that, although FWM conversion is transparent to modulation formats employing phase and intensity, polarization-multiplexed signals pose serious limitations to all-optical processing transparency.

Keywords

amplitude shift keying; differential phase shift keying; multiplexing; multiwave mixing; optical fibre communication; optical fibre polarisation; optical modulation; optical wavelength conversion; semiconductor optical amplifiers; FWM polarization-independent scheme; NRZ differential phase-shift keying modulation; SOA; bit rate 40 Gbit/s; bit rate 80 Gbit/s; four-wave mixing transparency; modulation format; nonreturn-to-zero ON -OFF keying; polarization-multiplexed signal; semiconductor optical amplifier; single-polarization signal; wavelength conversion; Four-wave mixing (FWM); semiconductor optical amplifier (SOA); wavelength conversion;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2009.2023091

Filename

4926214