Interdisciplinary Seminar in Nonlinear Science

Title: Ultra-Long-Haul Dense WDM with Dispersion-Managed Solitons: The paradox of best performance from this most nonlinear of transmission modes
Speaker: Dr. Linn F. Mollenauer
Speaker Info: Bell Labs
Brief Description:
Special Note: More current information may be available at Plan-it Purple

Dense WDM with dispersion-managed solitons tends to suffer from only one serious non-linear penalty, viz., the jitter in pulse arrival times resulting from XPM (cross-phase modulation) during inter-channel collisions. With the recent invention of periodic-group-delay- complemented dispersion compensation, however, even that penalty has been reduced to near insignificance, thus enabling the experimental demonstration, in this laboratory, of Tbit/s-level dense WDM at 10G per channel over the record-breaking distance of at least 18,000 km. This new limit is set primarily by the growth of spontaneous emission noise. Yet the nonlinear phase shift in such DMS transmission grows at the rate of at least 1 rad/Mm, in stark contrast to virtually all other rival modes, where it is purposely made to grow at much slower rates. In this talk, in addition to sketching the new PGD-complemented dispersion compensation and its first experimental test, I shall try to examine this apparent paradox of superior performance from the greatest nonlinearity.
Date: Friday, April 30, 2004
Time: 2:00PM
Where: Tech M416
Contact Person: Prem Kumar
Contact email: kumarp@ece.northwestern.edu
Contact Phone: 847-491-4128
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