Journal of information and communication convergence engineering

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Effective Compensation of the Distorted 1.12 Tbps WDM Signals Using Optimization of Total Dispersion

  • Lee, Seong-Real (Division of Marine Electronic and Communication Eng., Mokpo National Maritime University)
  • Published : 2007.12.30
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Abstract

Nonlinear effects and chromatic dispersion are the main causes of pulse degradation in high bit-rate WDM transmission systems and several architectures have been proposed to compensate them by means of optical phase conjugation. In this paper, a new method to exploit an optical phase conjugator (OPC) for nonlinearity and dispersion cancellation is disclosed. The proposed method is using optimal total dispersion of each fiber sections and it is simpler than those previously described in literature. Power penalty between WDM channels and the maximum launch power in $28{\times}40$ Gbps WDM transmission system designed by optimal total dispersion are more decreased and more increased than those in the conventional WDM transmission system with OPC, respectively. Furthermore, optimal total dispersion proposed in this research should provide the flexible design of WDM system, which less depends on OPC position.

Keywords

References

  1. G. P. Agrawal, Nonlinear Fiber Optics, Academic Press, 2001
  2. W. Pieper et al., 'Nonlinearity-insensitive standard-fiber transmission based on optical-phase conjugation in a semiconductor-laser amplifier,' Electron. Lett., vol. 30, pp. 724-726, Apr. 1994 https://doi.org/10.1049/el:19940494
  3. S. Watanabe and M. Shirasak, 'Exact compensation for both chromatic dispersion and Kerr effect in a transmission fiber using optical phase conjugation,' IEEE J. Lightwave Technol., vol. 14, pp. 243-238, Mar. 1996 https://doi.org/10.1109/50.485581
  4. I. Brener et al., 'Cancellation of all Kerr nonlinearities in long fiber spans using a LiNbO3 phase conjugator and Raman amplification,' in Optical Fiber Communications (OFC) Conf. 2000, vol. 4, 2000, pp. 266-268
  5. K. Inoue, 'Four-wave mixing in an optical fiber in the zero-dispersion wavelength region', J. Lightwave Technol., vol. LT-10, no. 11, pp. 1553-1561, 1992
  6. S. Watanabe, S. Takeda, G. Ishikawa, H. Ooi, J. G. Nielsen and C. Sonne, 'Simultaneous wavelength conversion and optical phase conjugation of 200 Gb/s ($5{\times}40$ Gb/s) WDM Signal using a highly nonlinear fiber four-wave mixing', ECOC 97 Conf., pp. 1-4, 1997
  7. lTU Recommendation 'Spectral grids for WDM applications: DWDM frequency grid' G.694.1, 2006
  8. G. P. Agrawal, Fiber-optic communication systems, John Wiley & Sons, Inc., 2002
  9. S. R. Lee, J. W. Kim, and S. C. Son, 'Effect of cross phase modulation on channel compensation in 320 Gbps Intensity / Direct Detection WDM transmission systems', J. of The Korean Ins. Of Maritime Inform. & Comm. Science, vol. 8, no. 5, pp. 1134 -1140, 2004