Preliminary Study of Heuristic Approach for WDM/OCDMA Switch in Future Network

This paper aims to study the design issues of a future switch and to identify the bottlenecks of the state-of-the-art technology to support the future traffic and service demand. The future switch should perform high speed switching, eliminate the implementation of buffers, transparent packet format and allows multiple user access. Thus, the development of a heuristic approach that handles multi protocol label swapping (MPLS) and supports all optical label swapping (AOLS) routing protocols via the implementation of optical code division multiple access (OCDMA) datagram is necessary. Consequently, to prepare for contention conditions, WDM can be integrated with OCDMA that offers more channels and network capacity. It harnesses enormous bandwidth by coupling multiple wavelengths into a single fiber. This should reduce the probability of packet loss due to contention. Furthermore, the orthogonal code and label swapping enhance the network throughput. Also, this paper investigates the possibility of the realization of WDM/OCDMA and the simulation results from the preliminary study are compared with the conventional approaches. Relatively, the work is aimed to characterize all components making up the router/switch that consists of the multiplexer, demultiplexer, encoder and decoder. Several relevant issues and the limitations are discussed by considering the features and requirements aforementioned.