Title :
1,000-km transmission of 20-Gbit/s QPSK-NRZ co-polarized DWDM signals with spectral efficiency of 1 bit/s/Hz using coherent detection
Author :
Kim, Sang-Yuep ; Kikuchi, Kazuro
Author_Institution :
Univ. of Tokyo 4-6-1 Komaba, Tokyo
Abstract :
We demonstrate co-polarized 20-Gbit/s DWDM NRZ-QPSK transmission over 1074 km using a phasephase-diversity optical homodyne receiver. The spectral efficiency is as high as 1.05 bit/s/Hz, which is limited by cross-phase modulation between DWDM channels.
Keywords :
homodyne detection; optical fibre communication; optical fibre polarisation; optical modulation; optical receivers; quadrature phase shift keying; telecommunication channels; wavelength division multiplexing; 1000 km transmission; DWDM channels; QPSK-NRZ co-polarized DWDM signals; bit rate 20 Gbit/s; coherent detection; cross-phase modulation; dense wavelength-division multiplexing; phasephase-diversity optical homodyne receiver; spectral efficiency; Channel spacing; Fiber nonlinear optics; Nonlinear optics; Optical crosstalk; Optical filters; Optical modulation; Optical receivers; Optical transmitters; Phase modulation; Wavelength division multiplexing;
Conference_Titel :
Optical Fiber Communication and the National Fiber Optic Engineers Conference, 2007. OFC/NFOEC 2007. Conference on
Conference_Location :
Anaheim, CA
Print_ISBN :
1-55752-831-4
DOI :
10.1109/OFC.2007.4348740
