Title :
The impact of bit correlation on cross-phase modulation effects for signal transmission in optical networks
Author :
Yang, Xiaohui ; Song, Shuxian
Author_Institution :
Lightwave Syst., Ciena Corp., Linthicum, MD, USA
Abstract :
This paper investigates the impact of the bit correlation between pseudo-random binary sequences (PRBS) on the cross-phase modulation (XPM) effect that is one of the major nonlinear distortion sources in DWDM systems. A correlation function is derived and its results agree with simulated and measured results. This work reveals that at least 2 bit period de-correlation is needed to de-correlate the PRBS between adjacent channels in DWDM systems. Otherwise, the XPM-induced distortions measured from the PRBS sequences modulated signals deviate greatly from the data modulated signals.
Keywords :
binary sequences; decorrelation; optical correlation; optical distortion; optical fibre networks; optical modulation; phase modulation; wavelength division multiplexing; DWDM systems; XPM-induced distortions; bit correlation; correlation function; cross-phase modulation effects; data modulated signals; decorrelation; nonlinear distortion sources; optical networks; pseudorandom binary sequences; signal transmission; Delay effects; Intelligent networks; Optical fiber networks; Optical fibers; Optical modulation; Optical transmitters; Probes; System testing; Tunable circuits and devices; Wavelength division multiplexing;
Conference_Titel :
Lasers and Electro-Optics Society, 2004. LEOS 2004. The 17th Annual Meeting of the IEEE
Print_ISBN :
0-7803-8557-8
DOI :
10.1109/LEOS.2004.1363089
