Performance improvement in an OCDMA system via two-photon absorption

Karl J. Dexter, Paul J. Maguire, Liam P. Barry

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, a simulation model and results are presented for a four user OCDMA system operating at an overall data rate of 4 Gb/s (4 x 1 Gb/s). It is shown that the nonlinear process of two-photon absorption in a semiconductor laser diode can be used to suppress multiple access interference generated by other users in the system, hence improving performance. The results presented here show that using such a device can increase the extinction ratio by 7.5 dB in comparison to a standard linear detector. These results are in good agreement with experimental findings already published.

Original languageEnglish
Title of host publicationChina-Ireland International Conference on Information and Communications Technologies, CIICT 2007
Pages645-649
Number of pages5
Edition529 CP
DOIs
Publication statusPublished - 2007
Externally publishedYes
EventChina-Ireland International Conference on Information and Communications Technologies, CIICT 2007 - Dublin, Ireland
Duration: 28 Aug 200729 Aug 2007

Publication series

NameIET Conference Publications
Number529 CP

Conference

ConferenceChina-Ireland International Conference on Information and Communications Technologies, CIICT 2007
Country/TerritoryIreland
CityDublin
Period28/08/0729/08/07

Keywords

  • Nnonlinear detection
  • Optical code division multiple access
  • Optical thresholder
  • Two-photon absorption

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