Dispersion in multiwavelength optical code-division multiple-access systems: Impact and remedies

Eddie K.H. Ng*, G. E. Weichenberg, Edward H. Sargent

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


Temporal skewing, a hitherto unexamined effect of chromatic dispersion on multiwavelength optical code-division multiple-access (MW-O-CDMA) systems, is explored through simulation of realistic networks. In addition, two novel methods for combating the deleterious effects of temporal skewing are proposed: optimum threshold detection and code-pattern preskewing. It is shown that for a practical system configuration with optimum threshold detection, MW-O-CDMA networks can maintain design hit error rate performance within an order of magnitude for link lengths of up to approximately 500 m. Our results show that the effect merits careful attention in the design and realization of any MW-O-CDMA system based on two-dimensional codes. Code pattern preskewing presents the possibility of completely eradicating the impact of temporal skewing.

Original languageEnglish (US)
Pages (from-to)1811-1816
Number of pages6
JournalIEEE Transactions on Communications
Issue number11
StatePublished - Nov 2002


  • Chromatic dispersion
  • Local-area networks
  • Multiwavelength optical networks
  • Optical code-division multiple access
  • Temporal skewing

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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