Hybrid (OCDMA/WDM) system using EDFA for optical access networks

This paper represents the hybrid system performance compare to different bit rate with direct detection techniques. Implementation of EDFA in hybrid system which is increasing the fiber distance for subscriber requirement for high connectivity and speed data transmission. We have to used Modified Double Weight (MDW) code as signature code for flexible, scalable together enhance the performance and improve the security of the system. Proposed hybrid system provides high bandwidth for the immense users. The different detection techniques apply to increased capacity, accuracy and ability to operate simultaneously. The result shows that using EDFA provides 2.5×−10 BER at distance 6km where without EDFA 3.6×10−07. According to the analysis results, the proposed direct detection technique improves the signal quality with low optimum gain of the system. Thus, this system is considered as encouraging solution for the optical access network.