This paper describes and evaluates the performance of three dedicated path protection schemes (Two Step, Two Step with backtracking and One Step) for all-optical networks, operating with full conversion and the main wavelength assignment algorithms (Random, First-Fit and Most Used) under different network topologies. Further, this work evaluates the impact of dedicated path protection in the performance of the wavelength assignment algorithms.

ABSTRACT--Due to large bandwidth and high speed data requirement, the present means of communication needs constant updates. Wavelength division multiplexing (WDM) technology is very promise to meet the present day data traffic. It is raised in a situation that after the initial deployment of optical networks, service providers often need to upgrade resources to accommodate increasing traffic demand. This can be achieved through traffic grooming and considerable study is done on static traffic grooming. Most studies on Dynamic traffic grooming focused on designing effective algorithms to achieve better performance (typical blocking probability with given resources such as wavelength and transponders).The reverse problem has given the blocking requirement in dynamic traffic grooming, how to determine the resources needed to meet this requirements is studied, we call it resource planning for dynamic traffic grooming. Index Terms—Logical topology design, resource planning, traffic grooming, WDM optical networks. The rapid growth of communication networks is driven by ever-increasing user demand for new applications as well as continuous advancements in the technologies involved. With the introduction of optical fibers as the communication medium, which can provide a huge bandwidth capacity, today’s optical networks can easily handle the unprecedented demand for bandwidth capacity of modern day communications [1]. However, because of