Hybrid OCDMA Over WDM System for 60 Km Transmission in Optical Access Networks
In this paper, Optical Code Division Multiple Access (OCDMA) over Wavelength Division Multiplexing (WDM) system called hybrid system is proposed for supporting large numbers of subscriber and video data in optical access network. This system combines OCDMA and WDM to carry different types of data in one system. In order to design a system, the Modified Double Weight (MDW) code is used as signature address because this code has flexible auto cross correlation properties which suppress Multiple Access Interference (MAI) in a significant amount. The complementary subtraction technique is used to detect the signal in the receiver side.