Abstract

We propose a fiber dispersion management scheme for large-capacity long-haul wavelength division multiplexing (WDM) transmission systems that considers not only second-but also third-order dispersion characteristics using transmission fibers with opposite dispersion signs. It eliminates the waveform distortion of WDM signals that originates from the existence of third-order dispersion, which is a constraint placed on WDM capacity in conventional dispersion management, while reducing the interchannel interaction caused by the interplay of fiber nonlinearity and second-order dispersion. Design concept of the scheme is discussed to show the feasibility of using actual fiber parameters. An experimental investigation on transmission performance regarding the signal pulse format, nonreturn-to-zero (NRZ) and return-to-zero (RZ), and interchannel interaction caused by four-wave mixing (FWM) and cross-phase modulation (XPM) is described for optimizing WDM system performance. It is experimentally shown that RZ pulse transmission is possible without significant spectral broadening over a wide wavelength range in dispersion managed fiber spans. Using these results together with a wideband optical amplifier gain-bandwidth management technique, yields long-distance WDM transmission with the capacity of 25 10 Gb/s over 9288 km.

[IEEE ]

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References

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  1. D. Marcuse, "RMS width of pulses in nonlinear dispersive fibers", J. Lightwave Technol., vol. 10, pp. 17-21, Jan. 1992.
  2. M. Murakami, T. Takahashi, M. Aoyama, T. Imai, M. Amemiya, M. Sumida and M. Aiki, "System performance evaluation of the FSA submarine optical amplifier system", J. Lightwave Technol., vol. 14, pp. 2657-2671, Dec. 1996.

J. Lightwave Technol. (2)

D. Marcuse, "RMS width of pulses in nonlinear dispersive fibers", J. Lightwave Technol., vol. 10, pp. 17-21, Jan. 1992.

M. Murakami, T. Takahashi, M. Aoyama, T. Imai, M. Amemiya, M. Sumida and M. Aiki, "System performance evaluation of the FSA submarine optical amplifier system", J. Lightwave Technol., vol. 14, pp. 2657-2671, Dec. 1996.

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