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Pump Light Porer of Wideband Optical Phase Conjugator Dependence on Amplifier Spacing in 320 Gbps WDM Systems with MSSI

Lee Seong-Real    (Division of Marine Electro. and Comm. Eng., Mokpo National Maritime University  );
  • 초록

    In this paper, the optimum pump light powers of optical phase conjugator(OPC) are numerically investigated as a function of amplifier spacing in 1,200 km $8{\times}40$ Gbps WDM systems with 0.1, 0.4, 0.8, or 1.6 ps/nm/km dispersion coefficient. It is confirmed that the variation of optimal pump light power dependence on amplifier spacing for NRZ transmission system is smaller than that for RZ transmission system through the evaluations and analysis of eye opening penalty(EOP) characteristics. And, in both cases of NRZ and RZ transmission, the variation of optimal pump light power is more increased as amplifier spacing becomes longer. Additionally, it is confirmed that the best amplifier spacing in NRZ and RZ transmission system is 50 km.


  • 주제어

    Optical phase conjugator(OPC) .   Highly-nonlinear dispersion shifted fiber(HNI-DSF) .   Optimal pump light power .   Mid-span spectral inversion(MSSI) .   Amplifier spacing.  

  • 참고문헌 (11)

    1. Seong-Real Lee and S. E. Cho, Pump light power of optical phase conjugator using HNLDSF in WDM systems with MSSI, The J. of Korean Inst. of Comm. Sciences, Vol.30, No.3A, pp.168-177, 2005     
    2. G. P. Agrawal, Fiber-optic communication systems, John Wiley & Sons, Inc., 2002 
    3. Seong-Real Lee and S. E. Cho, The compensation characteristics of WDM channel distortion dependence on NRZ format and RZ format, The J. of the Korea Electromag. Eng. Soc. (Korean), Vol.14, No.11, pp.1184-1190, 2003     
    4. D. Marcuse, 'Single-channel operation in very long nonlinear fibers with optical amplifiers at zero dispersion', J. Lightwave Technol., Vol. LT-8, No. 10, pp.1548-1557, 1990 
    5. A. M. Vengsakar, W. A. Reed, 'Dispersioncompensating single-mode fibers : Efficient designs for first- and second-order compensation', Opt. Lett., Vol.18, pp.924-926, 1993 
    6. N. Shibata, K. Nosu, K. Iwashita and Y. Azuma, 'Transmission limitations due to fiber nonlinearities in optical FDM systems', IEEE J Select. Areas in Comm., Vol.8, No.6, pp.1068-1077, 1990 
    7. A. R. Chraplyvy, Limitations on lightwave communications imposed by optical-fiber nonlinearities, J. Lightwave Technol., Vol.8, No.10, pp.15481-557, 1990 
    8. G. P. Agrawal, Nonlinear Fiber Optics, Academic Press, 2001 
    9. F. Forghieri, R. W. Tkach and A. R. Chraplyvy, 'WDM systems with unequally spaced channels', J. Lightwave Technol., Vol.LT-13, No.5, pp.889-897, 1995 
    10. S. Watanabe and M. Shirasaki, 'Exact compensation for both chromatic dispersion and Kerr effect in a transmission fiber using optical phase conjugation', J. Lightwave Technol., Vol.LT-14, No.3, pp.243-248, 1996 
    11. 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 

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