Evaluation Performance of Two-Dimensional Multi-Diagonal Code Using Polarization and Wavelength of OCDMA System


  • Haidar S. Zaeer Dhaam
  • Faris Mohammed Ali
  • ,Ahmed Ghanim Wadday


optical code division multiple access (OCDMA), Optical Fiber Systems (OFS), Free Space Optics (FSO), Multi-Diagonal (MD) code, Zero cross correlation (ZCC) code.


Abstract— In this paper, a new encoder/decoder technique has employed two orthogonal polarization states (vertical and horizontal) of  a two-dimensional optical code, which combined polarization and wavelength scheme (p/w). This technique employed in order to
increase the number of users in the FTTH network. In addition, Optical Fiber Systems (OFS) and Free Space Optics (FSO) scenarios
were utilized with different Spectral Amplitude Coding Optical Code Division Multiple Access (SAC-OCDMA) codes. The FTTH
network based on incoherent SAC-OCDMA is tested by using the One and Two Dimensional Multi-Diagonal (1D-MD, 2D-MD) codes
and 1D and 2D Zero Cross Correlation (ZCC) codes. The results show that the number of the total supported homes for the 2D codes
is doubled as a comparison with 1D codes. As well as, the simulation results show the performance of MD code is better presented than ZCC in both OFS and FSO scenarios.