The demand for bandwidth for applications in high-speed networks requires improved network topologies,
throughput, and parallelism. Many techniques such as optical code-division multiple access (CDMA), wavelength
division multiple access (WDMA) and dense WDMA (DWDMA), have shown considerable potential for high-speed
network applications. This paper evaluates the performance of these techniques with respect to bandwidth utilization and
delay under various scenarios. Simulation results showed that optical CDMA system emerges as the most efficient
system because CDMA utilization is the highest when compared to the WDMA and DWDMA systems, and that CDMA
is better for high offered loads compared to WDMA and DWDMA.