Title :
NRZ vs. RZ in 10-40 Gbit/s dispersion-managed WDM transmission systems
Author :
Hayee, M.I. ; Willner, A.E.
Author_Institution :
Dept. of Electr. Eng.-Syst., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
Summary form only given. We compare NRZ and RZ modulation for wavelength-division multiplexing (WDM) systems operating up to 40 Gbit/s with as many as 16 channels. We find that in 10-40 Gbit/s dispersion-managed (single-mode fiber+dispersion-compensating fiber) systems, NRZ is more adversely affected than RZ by nonlinearity, which is the main degradation source. However, the difference between RZ and NRZ in a 16-channel 40-Gbit/s system is not very significant because dispersion becomes a key limiter. For /spl les/8 channels, RZ is almost always more optimal.
Keywords :
optical fibre communication; optical fibre dispersion; optical modulation; wavelength division multiplexing; 10 to 40 Gbit/s; NRZ modulation; RZ modulation; dispersion; dispersion-compensating fiber; dispersion-managed WDM transmission system; multichannel system; nonlinearity; single-mode fiber; wavelength division multiplexing; Degradation; Dispersion; Four-wave mixing; Optical fiber amplifiers; Optical modulation; Optical signal processing; Scanning probe microscopy; Semiconductor optical amplifiers; Stimulated emission; Wavelength division multiplexing;
Conference_Titel :
Optical Fiber Communication Conference and Exhibit, 1998. OFC '98., Technical Digest
Conference_Location :
San Jose, CA, USA
Print_ISBN :
1-55752-521-8
DOI :
10.1109/OFC.1998.657508
