Title :
Effects of chromatic dispersion on optical coherent-detection systems
Author :
Ho, Keang-Po ; Wang, Hsi-Cheng
Author_Institution :
SiBEAM, Sunnyvale, CA
fDate :
9/1/2008 12:00:00 AM
Abstract :
Chromatic dispersion induces to a phase-modulated optical signal a constant phase rotation that was never included in most previous studies. When the constant phase shift is removed by a phase-locked loop, the dispersion tolerance of a coherent-detection system is increased. The dispersion tolerance of phase-shift keying (PSK) signal is compared with differential PSK (DPSK) signals by numerical simulation and experimental measurement. Contrary to conventional belief, PSK signal has larger dispersion tolerance than DPSK signal.
Keywords :
differential phase shift keying; numerical analysis; optical fibre communication; optical fibre dispersion; phase locked loops; DPSK signals; chromatic dispersion; constant phase shift; differential PSK signals; dispersion tolerance; numerical simulation; optical coherent-detection systems; phase-locked loop; phase-modulated optical signal; phase-shift keying signal; Chromatic dispersion; Differential quadrature phase shift keying; Optical distortion; Optical fiber dispersion; Optical filters; Optical receivers; Optical signal processing; Phase locked loops; Phase measurement; Phase shift keying; Chromatic dispersion; optical fiber communication systems; time-resolved optical filtering;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2008.060432
