Channel Crosstalk Impact on OCDMA Performance under Efficient Diagonal Code and Optimized Pulse Shaping

Yasseen Sadoon Atiya, H. J. Abd, Noora Salim, Norashidah M. Din, Karar Omran

Research output: Contribution to journalConference article


This paper examines the four-wave mixing (FWM) effect on optical code-division multiple-access (OCDMA) performance systems in the presence of Multi-Diagonal code (MD). System performance improvement is accomplished by means of fibre length tuning and stratified different modulation shapes, which are Non-return-to-Zero (NRZ), Gaussian, and Sine wave, all examined with 500 and 1Gb/s data rate values. The tests show that the NRZ modulation offers better system performance compared with other modulations for all data rate values used. Moreover, the second channel of each user offered better system performance than the other channels used. For instance, for 1Gb/s, at the second channel, the NRZ modulation offered the best performance with a quality factor (Q -factor) of 5.1 at 100 km fibre length, whereas the first channel introduced a worse Q-factor of 3.1 at the same fibre length value.

Original languageEnglish
Article number012054
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 17 Jan 2020
Event3rd International Conference on Engineering Sciences, ICES 2019 - Kerbala, Iraq
Duration: 04 Nov 201906 Nov 2019


All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)

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