Title :
Study on cross-phase modulation (XPM) effect on amplitude and differentially phase-modulated multilevel signals in DWDM transmission
Author :
Kikuchi, Nobuhiko ; Sekine, Kenro ; Sasaki, Shinya ; Sugawara, Toshiki
Author_Institution :
Central Res. Lab., Hitachi Ltd., Tokyo, Japan
fDate :
7/1/2005 12:00:00 AM
Abstract :
The characteristic degradation mechanism of the cross-phase modulation (XPM) effect on multilevel amplitude and differentially phase-shift keying (APSK) signals in dense wavelength-division-multiplexing (DWDM) transmissions is analyzed and experimentally investigated, for the first time. Based on the results, we successfully demonstrate a 0.48-Tb/s (30-Gb/s/ch) 50-GHz-spaced 16-channel DWDM 160-km unrepeatered transmission of eight-level APSK signals suppressing the XPM-induced degradation.
Keywords :
amplitude shift keying; channel spacing; differential phase shift keying; optical distortion; optical fibre communication; optical modulation; phase modulation; wavelength division multiplexing; 0.48 Tbit/s; 160 km; 50 GHz; APSK; DWDM; XPM; amplitude differentially phase-modulated multilevel signals; amplitude differentially phase-shift keying; channel spacing; cross-phase modulation; Amplitude modulation; Amplitude shift keying; Degradation; Nonlinear distortion; Optical distortion; Optical modulation; Phase modulation; Phase shift keying; Scanning probe microscopy; Wavelength division multiplexing; Cross-modulation distortion; nonlinear distortion; optical fiber communication; optical modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.850013
