The benefits of employing 2-Dimensional (2D) Wavelength/Time (W/T) Hybrid code to mitigate the optical noise in spectral amplitude coding OCDMA networks system is investigated. This analysis allows us to identify the influences of optical noise such as PIIN noise, shot noise and thermal noise in the system performance by using 2D Hybrid FCC-MDW code. The mathematical calculation reveals this new code effectively mitigates the Phase Induced Intensity Noise (PIIN) and eliminates Multiple Access Interference (MAI). As a result, the performance of the system can be improved as well as support much more simultaneous users compared to 2D Perfect Difference (PD) and 2D M-matrices codes.

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A 2-Dimensional (2-D) Wavelength/Time (W/T) scheme is proposed for spectral amplitude coding OCDMA network system. The new hybrid codes are utilizing Flexible Cross Correlation (FCC) and Modified Double Weight (MDW) codes which both codes have good correlation properties and capable to suppress multiple access interference (MAI). From the numerical calculation, it has been shown that this new hybrid code effectively suppresses the phase Induced Intensity Noise (PIIN) and eliminates MAI. Furthermore, the cardinality of this proposed code accommodates 150% and 275% improvement compared to 2-D PD code and 2-D M-Matrices code respectivelyat the BER=10 -9 . As a result, the performance of the system can be improved as well as support much more simultaneous users compared to Perfect Difference (PD) and M-matrices codes.