40-Gb/s optical 3R regenerator using electroabsorption modulators for optical networks

Author

Otani, Tomohiro ; Miyazaki, Tetsuya ; Yamamoto, Shu

Author_Institution

Opt. Network Labs., KDDI R&D Laboratories, Inc, Saitama, Japan

Volume

20

Issue

2

fYear

2002

fDate

2/1/2002 12:00:00 AM

Firstpage

195

Lastpage

200

Abstract

A 40-Gb/s optical retiming, reshaping, and retransmitting (3R) regenerator was proposed and demonstrated using wavelength converters based on electroabsorption (EA) modulators for effectively implementing 40-Gb/s-based or higher bit rate wavelength division multiplexing (WDM) optical networks. The proposed optical 3R regenerator is configured in a very simple architecture, consisting of two wavelength converters, a clock recovery section, and an optical clock generator section. Furthermore, the stable and polarization-insensitive operation, as well as simple adjustment of an optimal operation condition of our proposed optical 3R regenerator, were confirmed by conducting transmission experiments. To investigate the applicability of optical 3R regenerators to optical networks, it was evaluated by insertion between two 500-km-long segments of transmission line. A Q-factor improvement of about 1.5 dB was obtained after transmission over 1000 km, compared to evaluation without the regenerator. This type of optical 3R regenerator proves extremely useful in future high-speed and scaleable all-optical networks

Keywords

Q-factor; clocks; electro-optical modulation; electroabsorption; optical fibre networks; optical receivers; optical transmitters; optical wavelength conversion; synchronisation; wavelength division multiplexing; 1000 km; 40 Gbit/s; 40-Gb/s optical 3R regenerator; 500 km; Q-factor improvement; bit rate; clock recovery section; conducting transmission experiments; electroabsorption modulators; high-speed scaleable all-optical networks; insertion; optical 3R regenerator; optical 3R regenerators; optical clock generator section; optical networks; optical retiming reshaping retransmitting regenerator; optimal operation condition; polarization-insensitive operation; stable operation; transmission; transmission line; wavelength converters; wavelength division multiplexing optical networks; Bit rate; Clocks; High speed optical techniques; Optical fiber networks; Optical modulation; Optical polarization; Optical wavelength conversion; Repeaters; WDM networks; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.983232

Filename

983232