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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editor: Keren Bergman
  • Vol. 7, Iss. 6 — Jun. 1, 2008
  • pp: 635–644

Reconfigurable encoder-decoder structure for 2D OCDMA systems

Muhsen Aljada and Kamal Alameh  »View Author Affiliations

Journal of Optical Networking, Vol. 7, Issue 6, pp. 635-644 (2008)

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We propose and experimentally demonstrate a 2.5Gbits/s reconfigurable encoder-decoder structure that can be used for two-dimensional (time-wavelength) optical code-division multiple access (OCDMA) systems. Each encoder and decoder is constructed using a single opto-very-large-scale-integrated (VLSI) processor for encoding N users, thus eliminating the need for optical switching between encoders. The opto-VLSI processor synthesizes wavelength codewords through computer-generated digital phase holograms, which can switch the wavelength through different true-time-delay paths. The encoded signal can be successfully retrieved at the decoder side only when the digital phase holograms of the encoder and the decoder are matched. The system performance is measured in terms of the generated autocorrelation and cross-correlation functions as well as eye diagrams.

© 2008 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(070.4550) Fourier optics and signal processing : Correlators
(070.4560) Fourier optics and signal processing : Data processing by optical means

ToC Category:
Research Papers

Original Manuscript: February 14, 2008
Revised Manuscript: March 26, 2008
Manuscript Accepted: April 18, 2008
Published: May 21, 2008

Muhsen Aljada and Kamal Alameh, "Reconfigurable encoder-decoder structure for 2D OCDMA systems," J. Opt. Netw. 7, 635-644 (2008)

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