New technique for Spectral Amplitude Coding (SAC) OCDMA networks for Reducing Four Wave Mixing (FWM) effects

Abstract

A new technique based on LED combined with CW lasers in Spectral Amplitude Coding (SAC) Optical Code Division Multiple Access (OCDMA) networks, which allow reduction of the four-wave mixing (FWM) effect. In this paper, SAC-OCDMA networks have been developed and analyzed based on Multi Diagonal (MD) and Zero Cross Correlation (ZCC) codes. We simulate and investigate of three users design and concluded that the FWM can be reducing by using the LED source combined with CW lasers for each user in the code's design. Our results show that the MD code gives better performance than the ZCC code by using our technique. In other words, the ratio of reducing the FWM power in the MD code is approximately -20 dBm, while in ZCC is -10 dBm.