This paper presents the work on the efficient scheme of Spectral Amplitude Coding Optical Code Division Multiple Access (SAC-OCDMA). This is one of the promising solution to the emerging need of high data rates. The systems based on OCDMA suffer from Multiple User Interference (MAI) and Phase-Induced Intensity Noise (PIIN). The SAC-OCDMA systems are able to eliminate them by using better code structuring. This script presents the numerical analysis and detailed comparison of logical interference cancellation of used 1D codes which are Enhanced Double Weight (EDW) and Modified Double Weight (MDW) codes. The three-user system is simulated and designed for associating BER and other performance parameters with respect to the length of the optical cable. The receiver side is using Single Photo Diode Detection (SPD) technique. The results reveal that EDW performs better than the MDW codes moreover, the transmission length for standard error free transmission is 120 km with EDW codes and 102 km for MDW codes. For comparative study PIN as well as APD detectors are used for the same parameters where a significant increase up to 45 km is seen while using APD.
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