Transmission of dispersion-managed solitons at 20 Gbit/s over 20000 km

Carruthers

et al. 2000

J. Lightwave Technol.

Self Cite

Abstract-We study theoretically and experimentally actively modelocked fiber lasers that are used in high repetition rate optical communication systems. Using an innovative numerical technique and a reduced model, we have found that the laser can operate in four different operating regimes when the laser intensity was changed; three of the regimes were experimentally observed in a laser with a sigma configuration. An excellent quantitative agreement between the theoretical and the experimental results was obtained. The use of dispersion management in the sigma laser was found to significantly improve the laser performance.

Section: Third Regime-nonlinear Evolution Without Pulse Dropoutmentioning

confidence: 99%

mentioning

confidence: 99%

Theoretical and experimental study of harmonically modelocked fiber lasers for optical communication systems

Horowitz

Carruthers

et al. 2000

J. Lightwave Technol.

Self Cite

“…The net gain coefficient may be written as elsewhere (2) where is the gain coefficient of the th amplifier; is the loss coefficient of the fiber; is the initial position of the th amplifier on the th round-trip; is the amplifier length. The autocorrelation function for the Langevin term in (1) may be written as (3) where is the Planck's constant and equals the spontaneous emission factor when and is zero elsewhere.…”

Section: Model and System Parametersmentioning

confidence: 99%

Comparison of theory and experiment for dispersion-managed solitons in a recirculating fiber loop

Grigoryan

IEEE J. Select. Topics Quantum Electron.

et al. 2000

Self Cite

Abstract-We have developed a model that accurately predicts the dynamics of the signal pulses and the growth of amplified spontaneous emission noise in a dispersion-managed soliton pulse train propagating in a recirculating fiber-loop experiment. Theoretically predicted dependencies of the amplitude and phase margins for the marks and the amplitude margin for the spaces as a function of distance are in remarkable agreement with the experiments. This model allows us to determine the key physical effects that limit the propagation distance in our experiments.Index Terms-Amplitude margin, amplified spontaneous emission noise, dispersion-managed soliton (DMS), excess gain, filter, phase margin, pulse dynamics, timing jitter.

“…Our propagation distance is 24 500 km, corresponding to the maximum experimental value [7], [10]. We choose Gaussian initial pulses having long trailing tails at large positive times such that at and at .…”

Section: Introductionmentioning

confidence: 99%

Tolerance of dispersion-managed soliton transmission to the shape of the input pulses

Grigoryan¹,

Carter

IEEE Photon. Technol. Lett.

2000

Self Cite

Abstract-We showed that long-distance transmission is affected by the source pulse tails. Fast tail dropoff dramatically improves the transmission. We found that the tails must be at least 20 dB down 50 ps from the peak in order to successfully transmit signals over 20 000 km at 20 Gbit/s with anomalous path average dispersion. While tails that are 15 dB down 50 ps from the peak are sufficient to transmit data at 10 Gbit/s over 20 000 km with anomalous path average dispersion, the tails must be down at least 25 dB 50 ps from the peak to transmit data with slightly normal path average dispersion.Index Terms-Optical fiber communication, optical solitons, optical fiber dispersion, optical propagation in nonlinear media.