Title :
Coherent demodulation of 40-Gbit/s polarization-multiplexed QPSK signals with 16-GHz spacing after 200-km transmission
Author :
Tsukamoto, Satoshi ; Ly-Gagnon, Dany-Sebastien ; Katoh, Kazuhiro ; Kikuchi, Kazuro
Author_Institution :
Res. Center for Adv. Sci. & Technol., Univ. of Tokyo, Japan
Abstract :
40-Gbit/s polarization-multiplexed QPSK signals with 16-GHz spacing are demodulated after 200-km transmission by using a homodyne phase-diversity receiver. The highlights of our scheme are electrical post-filtering and digital signal processing that enhance the BER performance.
Keywords :
demodulation; error statistics; homodyne detection; light polarisation; low-pass filters; multiplexing; optical fibre communication; optical receivers; optical signal detection; quadrature phase shift keying; signal processing; 200 km; 40 Gbit/s; BER performance; analog-to-digital converters; coherent demodulation; digital signal processing; electrical post-filtering; homodyne phase-diversity receiver; low-pass filter characteristics; polarization-multiplexed QPSK signals; Demodulation; Digital signal processing; Erbium-doped fiber amplifier; Laser feedback; Optical fiber polarization; Optical filters; Optical polarization; Optical receivers; Quadrature phase shift keying; Wavelength division multiplexing;
Conference_Titel :
Optical Fiber Communication Conference, 2005. Technical Digest. OFC/NFOEC
Print_ISBN :
1-55752-783-0
DOI :
10.1109/OFC.2005.193207
