Abstract—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. Finally, we ascertained by network simulation experiments that the proposed system provides better signal as compare to OCDMA system.

Index Terms—MDW code, SAC-OCDMA, complementary detection, WDM and hybrid system.

N. Ahmed, S. A. Aljunid, A. Fadil, and R. B. Ahmad are with School of Computer and Communication Engineering, University Malaysia Perlis(UniMAP), Malaysia.
M. A. Rashid is with School of Electrical Systems Engineering,University Malaysia Perlis (UniMAP), Malaysia.

Cite: N. Ahmed, S. A. Aljunid, A. Fadil, R. B. Ahmad, and M. A. Rashid, "Hybrid OCDMA over WDM System for 60 Km Transmission in Optical Access Networks," International Journal of Computer and Communication Engineering vol. 1, no. 2, pp. 89-92 , 2012.