Effect of Subpath Protection in optical WDM Mesh Networks

Networking makes communication ease. But failure of any network element due to the node/nodes or the link/links or any other factor can cause a huge problem resulting in data loss. As such, many protection and restoration techniques have been developed. In our research, we worked with Optical Wavelength Division Multiplexing (WDM) Mesh Networks, assuming a hypothetical network of a larger area (Bangladesh). We have applied Shared-Path Protection and Subpath Protection schemes for a single link failure for a given set of lightpaths. Then, comparison of both the simulation results of the above mentioned protection schemes, showed that subpath protection gives much reduced fault-recovery time than that of shared-path protection. Same is concluded for survivability and scalability of our hypothetical network.