Title :
Demodulation of co-polarized 20-Gbit/s QPSK signals with 16-GHz spacing after 200-km transmission using coherent detection and digital signal processing
Author :
Tsukamoto, Satoshi ; Ly-Gagnon, Dany-Sebastien ; Katoh, Kazuhiro ; Kikuchi, Kazuro
Author_Institution :
Res. Center for Adv. Sci. & Technol., Tokyo Univ., Japan
Abstract :
Coherent detection and digital signal processing can effectively recover optical QPSK signals with nearly ideal filtering characteristics. We demonstrate the demodulation of co-polarized 20-Gbit/s QPSK signals with 16-GHz spacing after 200-km transmission.
Keywords :
channel spacing; demodulation; digital signal processing chips; homodyne detection; optical communication equipment; optical fibre communication; optical signal detection; quadrature phase shift keying; 16 GHz; 20 Gbit/s; 200 km; channel spacing; co-polarized signal demodulation; coherent homodyne detection; digital signal processing; ideal filtering characteristics; optical QPSK signal demodulation; signal transmission; Demodulation; Digital signal processing; Optical crosstalk; Optical feedback; Optical filters; Optical receivers; Optical signal processing; Optical transmitters; Quadrature phase shift keying; Signal processing;
Conference_Titel :
Lasers and Electro-Optics, 2005. (CLEO). Conference on
Print_ISBN :
1-55752-795-4
DOI :
10.1109/CLEO.2005.202170
