Performance analysis of Spectral Amplitude Coding-Optical Code Division Multiple Access (SAC-OCDMA) in free space optical networks with a multi-wavelength laser source

Majid Moghaddasi, Ambali Taiwo, Saleh Seyedzadeh, Moahammad Boroon, Salasiah Hitam, Siti Barirah Ahmad Anas

Research output: Contribution to journalArticle

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Abstract

We present spectral amplitude coding, optical code division multiple access technique in free space optical network utilizing multi-wavelength laser source. Using the simulation software, the system performance is analysed while the impact of the turbulence is also considered. The simulation is implemented using modified double weight (MDW) code and for three users. The results show that using receiver aperture diameter, D, of 4 cm and beam divergence, θ, of 1 mrad, transmission distance 2.8, 2.45 and 2.25 km is achievable for weak, moderate and strong turbulence, respectively. This distance can be improved if bigger D or smaller θ were utilized; moreover, it is shown that the increment of turbulence increases jitter, which downgrades system performance.
Original languageEnglish
Pages (from-to)67-80
Number of pages14
JournalLasers in Engineering
Volume38
Issue number1-2
Publication statusPublished - 31 Dec 2017

Keywords

  • free space optics (FSO)
  • wireless optical networks
  • multi-wavelength laser
  • laser array
  • optical code division multiple access (OCDMA)
  • spectral amplitude coding (SAC)

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