Blocking performance for all optical wavelength routed WDM networks under wavelength conversions

Wavelength converters relax the wavelength continuity constrain in wavelength routed WDM all optical networks. Since wavelength converter is an expensive component with respect to other components in optical network researches are constrained in minimizing this coast keeping the blocking performance as optimum as we can. Sparse wavelength converters, limited range wavelength converters, shared node wavelength converters and node shared wavelength converters are examples used to optimize this problem. In this paper blocking performance optimization for convertible routers in WDM optical networks are examined using simulation. Simulation results show that full wavelength converters for large paths give significant enhancement in blocking performance than the non wavelength converter router path of the same number of nodes. wavelength converters depends on many factors such as network topology, number of wavelengths available, and traffic patterns.