한국정보통신학회논문지 (Journal of the Korea Institute of Information and Communication Engineering)

  • 제17권4호
  • /
  • Pages.971-980
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  • 2013
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  • 2234-4772(pISSN)
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  • 2288-4165(eISSN)
한국정보통신학회 (The Korea Institute of Information and Commucation Engineering)
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분산 제어가 적용된 WDM 전송 링크에서 집중 RDPS를 통한 시스템 성능 개선

Improvement of System Performance Through Concentrated RDPS in WDM Transmission Links with Dispersion Management

  • 이성렬 (목포해양대학교 해양정보통신공학과)
  • 투고 : 2012.12.19
  • 심사 : 2013.01.18
  • 발행 : 2013.04.30
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초록

파장 분할 다중 전송을 위한 분산 제어 (DM; dispersion management)가 적용된 전송 링크에서 특정 중계 구간에만 RDPS(residual dispersion per span)가 집중된 구조를 통한 시스템 성능 개선 정도를 RDPS가 모든 중계 구간에서 균일한 구조에서의 시스템 성능과 비교하여 살펴보았다. 80 km의 14개 단일 모드 광섬유 중계 구간 중 RDPS가 집중되는 중계 구간을 제외한 나머지 중계 구간의 RDPS가 0 ps/nm인 전송 링크에서 5번째~13번째 중계 구간의 RDPS가 300 ps/nm로 집중되고 6번째~13번째 중계 구간의 RDPS가 1,320 ps/nm로 집중되면 최상의 시스템 성능 개선이 이루어지는 것을 확인하였다. 또한 두 경우 모두 precompensation에 의해 결정되는 최적의 NRD(net residual dispersion)는 10 ps/nm이고, postcompensation에 의해 결정되는 최적의 NRD는 -10 ps/nm인 것을 확인하였고, 눈 열림 패널티(EOP; eye opening penalty)가 1 dB 이하가 되는 유효 입사 전력의 범위가 RDPS가 균일한 링크에 비해 집중 RDPS가 300 ps/nm인 경우 2 dB, 1,320 ps/nm인 경우 6 dB 정도 개선되는 것을 확인하였다.

System performance improvement through the concentrated residual dispersion per span (RDPS) in special transmission fiber spans in optical transmission links with dispersion management (DM) for wavelength division multiplexed (WDM) transmission is investigated through the comparison with the performance in optical transmission links with uniform RDPS in every fiber spans. It is confirmed that, in optical links with RDPS of 0 ps/nm uniformly distributed in the rest fiber spans, if RDPS of 300 ps/nm and 1,320 ps/nm are concentrated in 5th-13th fiber spans and 6th-13th fiber spans, respectively, then the best performance is obtained. It is also confirmed that optimal net residual dispersion (NRD) controlled by precompensation and postcompensation are 10 ps/nm and -10 ps/nm, respectively, in all two cases, and the effective launching power range below 1 dB eye opening penalty (EOP) in the concentrated RDPS of 300 ps/nm and 1,320 ps/nm are improved by 2 dB and 6 dB than optical transmission links with the uniformly distributed RDPS, respectively.

키워드

참고문헌

  1. X. Xiao, S. Gao, Y. Tian, and C. Yang, "Analytical optimization of the net residual dispersion in SPM-limited dispersionmanaged systems," J. Lightwave Technol., Vol. 24, No. 5, pp. 2038-2044, May 2006. https://doi.org/10.1109/JLT.2006.872278
  2. I. E. Araci1, S. Vorbeck, M. Schneiders, M. J. Ansari, N. Peyghambarian1 and F. Kueppers1 "System optimization and significant reach extension using alternating dispersion compensation for 160 Gbit/s transmission links", Optics Express, Vol. 13, No. 17, pp. 6336-6344, 2005. https://doi.org/10.1364/OPEX.13.006336
  3. M.I. Hayee, A.E. Willner, "RZ versus RZ in 10-40-Gb/s dispersion-managed WDM transmis- sion systems," IEEE Photonics Technol. Lett. Vol. 11, pp. 991-993, 1999. https://doi.org/10.1109/68.775323
  4. S. L. Jansen, D. van den Borne, P. M. Krummrich, S. Splter, G.-D. Khoe, "Long-haul DWDM transmission systems employing optical phase conjugation", IEEE J. of Selected Topics in Quantum Electro., Vol. 12, No. 4, pp. 505-520, 2006. https://doi.org/10.1109/JSTQE.2006.876621
  5. X. Xiao, C. Yang and P. Shum, "Analytical Design of SPM-Limited Systems With Optical Phase Conjugation", IEEE Photonics Technol. Lett. Vol. 20, No. 7, pp. 472-474, 2008. https://doi.org/10.1109/LPT.2008.918209
  6. S. R. Lee and H. B. Yim, "System Performance Improvements in WDM ($24{\times}40$ Gbps) Transmission using Optical Phase Conjugator and Dispersion Management", The Journal of Korea Information and Communications Society, Vol. 33, No. 10, pp. 855- 864, 2008.
  7. S. R. Lee and H. B. Yim, "Asymmetricity of Optical Phase Conjugation in Optical Transmission Links with Dispersion Management", The Journal of Korea Information and Communications Society, Vol. 35, No. 8, pp. 801-809, 2010.
  8. S. R. Lee, "Optimization of Net Residual Dispersion and Launching Power Depend on Total Transmission Length and Span Length in Optical Transmission Links with Dispersion Management and Optical Phase Conjugation ", The Journal of Korea Information and Communications Society, Vol. 36, No. 12, pp. 1433- 1441, 2011. https://doi.org/10.7840/KICS.2011.36B.12.1433
  9. ITU Recommendation "Spectral grids for WDM applications : DWDM frequency grid" G.694.1, 2006.
  10. G. P. Agrawal, Fiber Optic Communication Systems, 3rd ed., John Wiley & Sons, 2003.
  11. G. P. Agrawal, Nonlinear Fiber Optics, 3rd ed., Academic Press, 2001.
  12. S. R. Lee, "Performance Improvements through Controling Residual Dispersion Per Span in WDM Transmission Links with Zero Net Residual Dispersion", The Journal of Korea Navigation, Vol. 13, No. 5, pp. 656-661, 2009.
  13. N. Kikuchi and S. Sasaki, "Analytical Evaluation Technique of Self-Phase Modulation Effect on the performance of Cascaded Optical Amplifier Systems", J. Lightwave Technol., Vol. 13, No. 5, pp. 868-878, May 1995. https://doi.org/10.1109/50.387804
  14. 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. 14, No. 3, pp. 243-248, March 1996. https://doi.org/10.1109/50.485581