Title :
Nonlinear Tolerance of 53.5-Gb/s Differential 6-ary PSK Surrounded by 10.7-Gb/s NRZ-OOK Neighbors in SMF and DSF Transmission Links
Author :
Choi, Hyeon Yeong ; Morita, Itsuro
Author_Institution :
KDDI R&D Labs. Inc., Fujimino, Japan
fDate :
5/15/2012 12:00:00 AM
Abstract :
We demonstrate an optical transmission system based on a 53.5-Gb/s differential 6-ary phase-shift-keying (D6PSK) signal with copropagating 10.7-Gb/s nonreturn-to-zero (NRZ) on-off keying (OOK) channels over either 320-km-long single-mode fiber link with in-line dispersion compensation or 320-km-long dispersion-shifted fiber link, and compare its performances with that of a classical polarization-division-multiplexing differential quadrature phase-shift-keying (DQPSK)-based system. The results show that the nonlinear tolerance of the D6PSK signal outperforms that of the PDM-DQPSK signal in terms of the cross-phase modulation effect induced by the 10.7-Gb/s NRZ-OOK neighboring channels.
Keywords :
amplitude shift keying; optical fibre communication; optical links; optical modulation; phase shift keying; DSF transmission links; SMF transmission links; bit rate 10.7 Gbit/s; bit rate 53.5 Gbit/s; cross-phase modulation effect; differential 6-ary PSK surrounded NRZ-OOK neighbors; dispersion-shifted fiber link; distance 320 km; in-line dispersion compensation; nonlinear tolerance; nonreturn-to-zero on-off keying channels; optical transmission system; single-mode fiber link; Optical fiber dispersion; Optical fiber networks; Optical fiber polarization; Phase shift keying; Q factor; Cross-phase modulation; differential phase-shift-keying; fiber nonlinearity; multilevel modulation format; wavelength-division-multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2188505
