The beating of two or more lasers that have the same or a finite difference in the central frequencies, is the main source of noise in spectral amplitude coding optical code division multiple access (SAC OCDMA) systems. In this paper we adopt a spatial multiplexing (SM) scheme for SAC OCDMA systems to mitigate this beat noise. The results show that for different code weights and different data rates SM SAC can support a larger number of users than the conventional SAC for all different laser source configurations. However, SM SAC requires a more complex system than the conventional SAC, and almost twice as much optical component.
© 2013 Optical Society of Korea
Original Manuscript: August 19, 2013
Revised Manuscript: October 22, 2013
Manuscript Accepted: October 22, 2013
Published: December 25, 2013
Ahmed M. Alhassan, Nasreen Badruddin, Naufal M. Saad, and Syed A. Aljunid, "Enhancing the Performance of Coherent Sources SAC OCDMA Networks via Spatial Multiplexing," J. Opt. Soc. Korea 17, 471-480 (2013)
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