Carrier reuse with gain compression and feed-forward semiconductor optical amplifiers

Author

Conforti, Evandro ; Gallep, Cristiano M. ; Ho, Steven H. ; Bordonalli, Aldário C. ; Kang, Sung-Mo

Author_Institution

Dept. of Microwaves & Opt., State Univ. of Campinas, Brazil

Volume

50

Issue

1

fYear

2002

fDate

1/1/2002 12:00:00 AM

Firstpage

77

Lastpage

81

Abstract

The results of two techniques for optical carrier regeneration and wavelength reuse using semiconductor optical amplifiers (SOAs) are presented in this paper. The main objective is to recover an optical carrier by erasing its amplitude modulation. The first technique employs gain compression of deeply saturated SOAs. The second technique uses a feed-forward approach, where a delayed current signal is injected into the SOA with the same shape of the incoming optical pulse. The second technique could be capable to recover the optical carrier with less than 3-dB noise. However, it was observed that the SOA gain recovery time limits the maximum usable bit rate. Theoretical simulation showed good agreement with experimental results

Keywords

amplitude modulation; digital communication; feedforward; laser beam applications; optical fibre communication; optical modulation; semiconductor optical amplifiers; AM erasure; SOA gain recovery time; amplitude modulation; data extinction; deeply saturated SOAs; delayed current signal injection; feedforward approach; gain compression; maximum usable bit rate; optical carrier regeneration; optical pulse reshaping; optical wavelength reuse; semiconductor optical amplifiers; Amplitude modulation; Delay; Feedforward systems; Optical modulation; Optical noise; Optical saturation; Repeaters; Semiconductor optical amplifiers; Shape; Stimulated emission;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.981250

Filename

981250