SSFBG-based decorrelator for MUI rejection in synchronous optical CDMA systems

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Abstract

A superstructured fibre Bragg grating (SSFBG) decorrelator for rejecting multi-user interference (MUI) in a synchronous optical code division multiple access (OCDMA) system is proposed and investigated. The decorrelator is formed by appropriately defining the superstructure of a weak fibre Bragg grating. Theoretical results arrived at using coupled mode theory show that it is possible to make the MUI practically zero at the sampling instant provided there is perfect bit synchronisation among the users accessing the OCDMA system. A theoretical investigation on the degradation of optical signal to interference ratio (OSIR) is also conducted by statistically modelling the jitter likely to result in the bit synchronisation mechanism of the system.

Original languageEnglish
Pages (from-to)277-284
Number of pages8
JournalIEE Proceedings: Optoelectronics
Volume152
Issue number6
DOIs
Publication statusPublished - 12-2005

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

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