Abstract

<p><a href="http://www.osa-jon.org/features/OAN_2005.html">Feature Issue on Optical Access Networks (OAN)</a></p> We propose a spectral-amplitude-encoding optical-code-division-multiplexing (SAE∕OCDM) system with a heterodyne detection receiver for broadband optical multiple-access networks (OMANs). The performance of the proposed system is theoretically analyzed, taking into account various types of noise and interference, including multiple-access interference (MAI), cross talk, optical beating interference (OBI), and receiver noise. Analytical results show that the proposed system offers significant improvement in terms of receiver sensitivity and system capacity (number of users) compared with conventional direct-detection systems. We also discuss conditions necessary for a heterodyne detection receiver to work properly in a SAE∕OCDM system. In addition, the system performance is analyzed with several signature code sets including m-sequence, Hadamard, and modified quadratic congruence (MQC) code sets. It is found that signature code sets with higher weight, such as m-sequence and Hadamard code sets, are preferred in a SAE∕OCDM system with a heterodyne detection receiver.

© 2005 Optical Society of America

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  2. Z. Jiang, D. Seo, S. Yang, D. E. Leaird, R. V. Roussev, C. Langrock, M. M. Fejer, and A. M. Weiner, "Four-user 10 Gb∕s spectrally phase-coded O-CDMA system operating at 30 fJ∕bit," IEEE Photon. Technol. Lett. 17, 705-707 (2005).
  3. D. Zaccarin and M. Kavehrad, "An optical CDMA system based on spectral encoding of LED," IEEE Photon. Technol. Lett. 4, 479-482, (1993).
  4. M. Kavehrad and D. Zaccarin, "Optical code-division-multiplexed systems based on spectral encoding of noncoherent sources," J. Lightwave Technol. 13, 534-545 (1995).
  5. L. Nguyen, B. Aazhang, and J. F. Young, "All-optical CDMA with bipolar codes," Electron. Lett. 31, 469-470 (1995).
  6. C. F. Lam, D. T. K. Tong, M. C. Wu, and E. Yablonovitch, "Experimental demonstration of bipolar optical CDMA system using a balanced transmitter and complementary spectral encoding," IEEE Photon. Technol. Lett. 10, 1504-1506 (1998).
  7. E. D. J. Smith, P. T. Gough, and D. P. Taylor, "Noise limits of optical spectral-encoding CDMA systems," Electron. Lett. 31, 1469-1470 (1995).
  8. X. Wang and K. Kitayama, "Analysis of beat noise in coherent and incoherent time-spreading OCDMA," J. Lightwave Technol. 22, 2226-2232 (2004).
  9. E. D. J. Smith, R. J. Blaikie, and D. P. Taylor, "Performance enhancement of spectral-amplitude-coding optical CDMA using pulse-position modulation," IEEE Trans. Commun. 46, 1176-1185 (1998).
  10. Z. Wei, H. M. H. Shalaby, and H. Ghafouri-Shiraz, "Modified quadratic congruence codes for fiber Bragg-grating-based spectral-amplitude-coding optical CDMA systems," J. Lightwave Technol. 19, 1274-1281 (2001).
  11. Y. Maeda, K. Okada, and D. Faulkner, "FSAN OAN-WG and future issues for broadband optical access networks," IEEE Commun. Mag. 12, 126-132 (2001).
  12. G. P. Agrawal, Fiber-Optic Communication Systems, 2nd ed. (Wiley-Interscience, 1997).
  13. J. Veselka and S. Korotky, "A multiwavelength source having precise channel spacing for WDM systems," IEEE Photon. Technol. Lett. 10, 958-960 (1998).
  14. M. Fujiwara, J. Kani, H. Suzuki, K. Araya, and M. Teshima, "Flattened optical multicarrier generation of 12.5 GHz spaced 256 channels based on sinusoidal amplitude and phase hybrid modulation," Electron. Lett. 37, 967-968 (2001).
  15. J. G. Proakis, Digital Communications, 4th ed. (McGraw-Hill, 2001).

Electron. Lett.

L. Nguyen, B. Aazhang, and J. F. Young, "All-optical CDMA with bipolar codes," Electron. Lett. 31, 469-470 (1995).

E. D. J. Smith, P. T. Gough, and D. P. Taylor, "Noise limits of optical spectral-encoding CDMA systems," Electron. Lett. 31, 1469-1470 (1995).

M. Fujiwara, J. Kani, H. Suzuki, K. Araya, and M. Teshima, "Flattened optical multicarrier generation of 12.5 GHz spaced 256 channels based on sinusoidal amplitude and phase hybrid modulation," Electron. Lett. 37, 967-968 (2001).

IEEE Commun. Mag.

Y. Maeda, K. Okada, and D. Faulkner, "FSAN OAN-WG and future issues for broadband optical access networks," IEEE Commun. Mag. 12, 126-132 (2001).

IEEE Photon. Technol. Lett.

J. Veselka and S. Korotky, "A multiwavelength source having precise channel spacing for WDM systems," IEEE Photon. Technol. Lett. 10, 958-960 (1998).

C. F. Lam, D. T. K. Tong, M. C. Wu, and E. Yablonovitch, "Experimental demonstration of bipolar optical CDMA system using a balanced transmitter and complementary spectral encoding," IEEE Photon. Technol. Lett. 10, 1504-1506 (1998).

Z. Jiang, D. Seo, S. Yang, D. E. Leaird, R. V. Roussev, C. Langrock, M. M. Fejer, and A. M. Weiner, "Four-user 10 Gb∕s spectrally phase-coded O-CDMA system operating at 30 fJ∕bit," IEEE Photon. Technol. Lett. 17, 705-707 (2005).

D. Zaccarin and M. Kavehrad, "An optical CDMA system based on spectral encoding of LED," IEEE Photon. Technol. Lett. 4, 479-482, (1993).

IEEE Trans. Commun.

E. D. J. Smith, R. J. Blaikie, and D. P. Taylor, "Performance enhancement of spectral-amplitude-coding optical CDMA using pulse-position modulation," IEEE Trans. Commun. 46, 1176-1185 (1998).

J. Lightwave Technol.

Z. Wei, H. M. H. Shalaby, and H. Ghafouri-Shiraz, "Modified quadratic congruence codes for fiber Bragg-grating-based spectral-amplitude-coding optical CDMA systems," J. Lightwave Technol. 19, 1274-1281 (2001).

X. Wang and K. Kitayama, "Analysis of beat noise in coherent and incoherent time-spreading OCDMA," J. Lightwave Technol. 22, 2226-2232 (2004).

M. Kavehrad and D. Zaccarin, "Optical code-division-multiplexed systems based on spectral encoding of noncoherent sources," J. Lightwave Technol. 13, 534-545 (1995).

J. A. Salehi, A. M. Weiner, and J. P. Heritage, "Coherent ultrashort light pulse CDMA communication systems," J. Lightwave Technol. 8, 478-491 (1990).

Other

G. P. Agrawal, Fiber-Optic Communication Systems, 2nd ed. (Wiley-Interscience, 1997).

J. G. Proakis, Digital Communications, 4th ed. (McGraw-Hill, 2001).

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