Title :
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
fDate :
2/1/2002 12:00:00 AM
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;
Journal_Title :
Lightwave Technology, Journal of
