Duty-ratio control of nonlinear phase noise in dispersion-managed WDM transmissions using RZ-DPSK modulation at 10 Gb/s

Year: 2006

Authors: Tonello A., Wabnitz S., Boyraz O.

Autors Affiliation: Laboratoire de Physique, Université de Bourgogne, UMR National Center for Scientific Research (CNRS) 5027, 21078 Dijon-Cedex, France; Department of Electrical Engineering and Computer Science, University of California, Irvine, CA 92697-2625, United States; Xlim Institute, University of Limoges, Limoges, France

Abstract: The authors compare analytical and numerical estimates, showing that the nonlinear phase noise of short optical pulses associated with the coupling between amplified spontaneous emission noise and fiber nonlinearity may be controlled by adjusting the duty cycle of the return-to-zero (RZ) signal modulation format. The impact of this effect in the optimization of the performance of 10-Gb/s dispersion-managed wavelength division multiplexed (WDM) systems using RZ-differential phase-shift keying (DPSK) modulation is discussed. By extensive numerical simulations, it is shown that the transmission quality of ultradense WDM systems using the RZ-DPSK modulation format may be significantly enhanced by optimizing the duty cycle of the RZ pulses.

Journal/Review: JOURNAL OF LIGHTWAVE TECHNOLOGY

Volume: 24 (10)      Pages from: 3719  to: 3726

KeyWords: Computer simulation; Coupled circuits; Optical communication; Phase modulation; Phase shift keying; Wavelength division multiplexing, Amplified spontaneous emission noise; Duty-ratio control; Fiber nonlinearity; Nonlinear phase noise; Return-to zero signal modulation format, Nonlinear optics
DOI: 10.1109/JLT.2006.882238

Citations: 1
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