Title :
All-optical wavelength conversion by EAM with shifted bandpass filter for high bit-rate networks
Author :
Dahdah, N.E. ; Coquillé, R. ; Charbonnier, B. ; Pincemin, E. ; Kazmierski, C. ; Decobert, J. ; Vedadi, A. ; Aubin, G. ; Ramdane, A.
Author_Institution :
France Telecom Res. & Dev., Lannion, France
Abstract :
We report an original optical wavelength converter for transparent network and high-speed transmission. Based on an electroabsorption modulator (EAM) in cross-absorption modulation configuration, a red-shifted center wavelength filtering of the converted signal decreases the impact of the limited EAM response time. This original and simple device demonstrates wavelength conversion at 40 Gb/s, leading to a reduction of 4.7 dB on the bit-error rate (BER) penalty compared to the case of a centered filter. An absolute 1.8-dB BER power penalty, low switching energy (500 fJ/data pulse) and small applied DC bias are reported.
Keywords :
band-pass filters; electro-optical modulation; electroabsorption; error statistics; high-speed optical techniques; optical communication equipment; optical fibre networks; optical filters; optical wavelength conversion; red shift; transparency; 40 Gbit/s; EAM response time; all-optical wavelength conversion; bit-error rate; center wavelength filtering; cross-absorption modulation; electroabsorption modulator; high bit-rate networks; high-speed transmission; optical wavelength converter; power penalty; red-shifted filtering; shifted bandpass filter; transparent network; Band pass filters; Bit error rate; Delay; Filtering; High speed optical techniques; Optical fiber networks; Optical filters; Optical modulation; Optical wavelength conversion; Wavelength conversion; Absorption recovery time; absorption saturation power; all-optical wavelength conversion; chirp; cross-absorption modulation (XAM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.860026
