Title :
2-bit per symbol modulation/demodulation by DPSK over inverse-RZ optical pulses
Author :
Miyazaki, Tetsuya ; Kubota, Fumito
Author_Institution :
Commun. Res. Lab., Tokyo, Japan
Abstract :
We successfully demonstrated superimposing DPSK over inverse-RZ using SOA-XGM for 2-bit per symbol modulation/demodulation at 20-Gbit/s to simply double spectral efficiency. Error free operation less than 10/sup -12/ was achieved for both RZ and DPSK signals.
Keywords :
band-pass filters; differential phase shift keying; high-speed optical techniques; optical fibre amplifiers; optical fibre communication; optical filters; optical modulation; semiconductor optical amplifiers; 2-bit per symbol modulation-demodulation; 20 Gbit/s; DPSK; SOA-XGM; double spectral efficiency; inverse-RZ optical pulses;
Conference_Titel :
Lasers and Electro-Optics, 2004. (CLEO). Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
1-55752-777-6
