Journal of the Institute of Electronics and Information Engineers (전자공학회논문지)

The Institute of Electronics and Information Engineers (대한전자공학회)
권호 표지
DOI QR코드

DOI QR Code

Effect of Line-Width of Optical Sources on Performance of Spectral Amplitude Coding Optical CDMA Systems

광원 라인폭이 Spectral Amplitude Coding Optical CDMA시스템의 성능에 미치는 영향

  • Jhee, Yoon Kyoo (Dept. of Electronics Engineering, Ewha Womans University)
  • 지윤규 (이화여자대학교 전자공학과)
  • Received : 2014.09.06
  • Accepted : 2015.01.27
  • Published : 2015.02.25
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we analyze the effect of line-width of optical sources on the performance of spectral amplitude coding (SAC) optical code division multiple-access (OCDMA) systems. For a performance analysis we use a symmetric balanced incomplete block design (BIBD) code as the code sequence because we can construct a series of code families by choosing different values of q and m. The ideal BIBD code (m=2) requires narrower line-width than the nonideal BIBD codes when the effective power is large ($P_{sr}=-10dBm$). But the nonideal BIBD codes (m>2) need narrower line-width than the ideal BIBD code when $P_{sr}=-25dBm$.

본 논문은 광원 라인폭이 spectral amplitude coding (SAC) OCDMA 시스템에 미치는 영향을 구하였다. q와 m값에 따라 다양한 코드를 구현할 수 있으므로 symmetric balance incomplete block design(BIBD) 코드를 분석에 사용하였다. 그 결과 입력파워가 큰 경우 ($P_{sr}=-10dBm$) 이상적인 BIBD 코드가 비이상적인 BIBD 코드보다 더 좁은 광원 라인폭이 요구되었다. 그러나 입력파워가 작은 경우 ($P_{sr}=-25dBm$)에는 그 반대로 비이상적인 BIBD 코드가 이상적인 BIBD 코드보다 더 좁은 광원 라인폭이 필요했다.

Keywords

References

  1. S. A. Aljunid, M. Ismail, A. R. Ramli, B. M. Ali, and M. K. Abdullah, "A New Family of Optical Code Sequences for Spectral-Amplitude -Coding Optical CDMA Systems," IEEE Photonics Technology Letters, Vol. 16, no. 10, pp. 2383-2385, Oct. 2004. https://doi.org/10.1109/LPT.2004.833859
  2. C. Lin, J. Wu, H. Tsao and C. Yang, "Spectral Amplitude-Coding Optical CDMA System Using Mach-Zehnder Interferometers," J. of Lightwave Technology, Vol. 23, no. 4, pp. 1543-1555, April. 2005. https://doi.org/10.1109/JLT.2005.844205
  3. C. Yang, "Spectral Amplitude Coding Optical CDMA Networks using $2^m{\time}2^m$ Waveguide Gratings," IEEE Photonics Technology Letters, Vol. 22, no. 24, pp. 1835-1837, Dec. 2010. https://doi.org/10.1109/LPT.2010.2089445
  4. M. Noshad and K. Jamshidi, "Code Family for Modified Spectral-Amplitude-Coding OCDMA Systems and Performance Analysis," J. of Optical Communication Network, Vol. 2, no. 6, pp. 344-354, June. 2010. https://doi.org/10.1364/JOCN.2.000344
  5. E. Yang, J. Huang and S. Tseng, "Optical CDMA Network Codecs Structured With M-Sequence Codes Over Waveguide-Grating Routers," IEEE Photonics Technology Letters, Vol. 16, no. 2, pp. 641-643, Feb. 2004. https://doi.org/10.1109/LPT.2003.823089
  6. H. Rochette, S. Ayotte and L. Rusch, "Analysis of the Spectral Efficiency of Frequency-Encoded OCDMA Systems with Incoherent Sources," J. of Lightwave Technology, Vol. 23, no. 4, pp. 1610-1619, April 2005. https://doi.org/10.1109/JLT.2005.844201
  7. J. Wei and H. Ghafouri-Shiraz, "Codes for Spectral-Amplitude-Coding Optical CDMA Systems," J. of Lightwave Technology, Vol. 20, no. 8, pp. 1284-1291, Aug. 2002. https://doi.org/10.1109/JLT.2002.800301
  8. M. Noshad and K. Jamshidi, "Bounds for the BER of Codes with Fixed Cross Correlation in SAC-OCDMA Systems," J. of Lightwave Technology, Vol. 29, no. 13, pp. 1944-1950, July 2011. https://doi.org/10.1109/JLT.2011.2151251
  9. Yoon Kyoo Jhee, "Reconstructed Modified Double Weight Codes for Spectral-Amplitude-Coding Optical CDMA," J. of Institute of Electronics and Information Engineers, vol. 48, no. SD-4, pp. 1-5, April. 2011.
  10. Z. Wei and H. Ghafouri-Shiraz, "Codes for spectral-amplitude-coding optical CDMA systems," J. Lightw. Technol., vol. 20, no. 8, pp. 1284-1291, Aug. 2002. https://doi.org/10.1109/JLT.2002.800301
  11. A. M. Alhassan, N. M. Saad, and N. Badruddin, "An enhanced detection technique for spectral amplitude coding optical CDMA systems," IEEE Photon. Technol. Lett., vol. 23, no. 13, pp. 875-877, Jul. 2011. https://doi.org/10.1109/LPT.2011.2141658
  12. E. D. J. Smith, R. J. Blake, and D. P. Taylor, "Performance enhancement of spectral -amplitude-coding optical CDMA using pulse position modulation," IEEE Trans. Common, vol. 46, no. 9, pp. 1176-1185, Sep. 1998. https://doi.org/10.1109/26.718559
  13. Z. Wei, M. H. Shelby, and H. Ghafouri-Shiraz, "Modified quadratic congruence codes for fiber Bragg-grating-based spectral-amplitude coding CDMA systems," J. Lightw. Technol., vol. 19, no. 9, pp. 1274-1281, Sep. 2001. https://doi.org/10.1109/50.948274
  14. C. -H. Lin, J. -S. Wu, and C. -L. Yang, "Noncoherent spatial/spectral optical CDMA system with two-dimensional perfect difference codes," J. Lightwave Technol., vol. 23, no. 12, pp. 3966-3980, Dec. 2005. https://doi.org/10.1109/JLT.2005.859407
  15. B. -C. Yeh, C. -H. Lin, and J. Wu, "Noncoherent spectral/spatial OCDMA system using two-dimensional hybrid codes," J. Opt. Commun. Netw., vol. 2, no. 9, Sep. 2010.