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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 26 — Dec. 26, 2005
  • pp: 10469–10474

Inter-symbol interference and beat noise in flexible data-rate coherent OCDMA and the BER improvement by using optical thresholding

Xu Wang, Naoya Wada, and Ken-ichi Kitayama  »View Author Affiliations

Optics Express, Vol. 13, Issue 26, pp. 10469-10474 (2005)

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Impairments of inter-symbol interference and beat noise in coherent time-spreading optical code-division-multiple-access are investigated theoretically and experimentally by sweeping the data-rate from 622Mbps up to 10Gbps with 511-chip superstructured fiber Bragg grating. The BER improvement by using optical thresholding technique has been verified in the experiment.

© 2005 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2330) Fiber optics and optical communications : Fiber optics communications

ToC Category:
Research Papers

Xu Wang, Naoya Wada, and Ken-ichi Kitayama, "Inter-symbol interference and beat noise in flexible data-rate coherent OCDMA and the BER improvement by using optical thresholding," Opt. Express 13, 10469-10474 (2005)

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  1. J. A. Salehi and C. A. Brackett, "Code division multiple-access techniques in optical fiber networks," IEEE Trans. Commun. 37, 824-842, (1989). [CrossRef]
  2. K. Kitayama, X. Wang, and H. Sotobayashi, "State of the art and applications of optical code division multiple access," in European Conference on Optical Communication (ECOC’04), (Stockholm, Sweden, 2004), Tu4.6.1.
  3. X. Wang and K. Kitayama, "Analysis of beat noise in coherent and incoherent time-spreading OCDMA," J. Lightwave Technol. 22, 2226-2235 (2004). [CrossRef]
  4. Z. Jiang, D. S. Seo, S. D. Yang, D. E. Leaird, R. V. Roussev, C. Langrock, A. M. Fejer and A. M. Weiner, "Four-user, 2.5-Gb/s, spectrally coded OCDMA system demonstration using low-power nonlinear processing," J. Lightwave Technol. 23, 143-158 (2005). [CrossRef]
  5. R. P. Scott, W. Cong, K. Li, V. J. Hernandez, B. H. Kolner, J. P. Heritage, and S. J. Ben Yoo, "Demonstration of an error-free 4×10 Gb/s multiuser SPECTS O-CDMA network testbed," IEEE Photonics Technol. Lett. 16, 2186-2188 (2004). [CrossRef]
  6. P. C. Teh, P. Petropoulos, M. Ibsen and D. J. Richardson, "A comparative study of the performance of seven- and 63-chip optical code division multiple-access encoders and decoders based on superstructured fiber Bragg gratings," J. Lightwave Technol. 19, 1352-1365 (2001). [CrossRef]
  7. X. Wang, K. Matsushima, A. Nishiki, N. Wada, F. Kubota, and K. Kitayama, "High performance optical code generation and recognition using 511-chip 640Gchip/s phase-shifted superstructureed FBG," Opt. Lett. 30, 355-357 (2005). [CrossRef]
  8. X. Wang, N. Wada, T. Hamanaka, A. Nishiki and K. Kitayama, "10-user asynchronous OCDMA transmission experiment with 511-chip SSFBG and SC-based optical thresholder," Optical Fiber Communication Conf. (OFC’05 postdeadline), (Anaheim, USA, 2005), PD 33.
  9. X. Wang and K. T. Chan, "Enhancement of transmission data rates in incoherent FO-CDMA systems," in OptoElectronics Communication Conference (OECC’00), (Chiba, Japan, 2000), Tech. Dig., 14A2-5.
  10. S. Kutsuzawa, N. Minato, S. Oshiba, A. Nishiki, and K. Kitayama, "10 Gb/s×2 ch signal unrepeated transmission over 100 km of data rate enhanced time-spread/wavelength-hopping OCDM using 2.5-Gb/s-FBG en/decoder," IEEE Photon. Tech. Lett. 15, 317-319 (2003). [CrossRef]
  11. S. Kutsuzawa, N. Minato, K. Sasaki, H. Kobayashi, A. Nishiki, T. Ushikubo, K. Kamijoh, Y. Kamio, N. Wada, and F. Kubota, "Field demonstration of time-spread/wavelength-hop OCDM using FBG en/decoder," Optical Fiber Communication Conference 2005 (OFC /NFOEC 2005), (Anaheim, USA, 2005), OME77.
  12. J. H. Lee, P. C. Teh, P. Petropoulos, M. Ibsen, and D. J. Richardson, "A grating-based OCDMA coding-decoding system incorporating a nonlinear optical loop mirror for improved code recognition and noise reduction," J. Lightwave Technol. 20, 36-46 (2002). [CrossRef]
  13. X. Wang, T. Hamanaka, N. Wada, and K. Kitayama, "Dispersion-flattened-fiber based optical thresholder for multiple-access-interference suppression in OCDMA system," Opt. Express 13, 5499-5505 (2005) <a href="http://www.opticsexpress.org/abstract.cfm?URI=OPEX-13-14-5499">http://www.opticsexpress.org/abstract.cfm?URI=OPEX-13-14-5499</a>. [CrossRef] [PubMed]

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