The Unused Capacity Minimization in WDM Mesh Networks With Sharing Optical Path Protection by Finite Differences

In this paper, the shared protection method will be examined with the linear function method and the accurate polynomial function method of the finite differences. The merit of these methods is the successful solving of the problems of protected networks and they can used to verify each other. Then the problem of the unused available network capacity minimization is approached by four method combination (both finite differences methods are used in three of four methods). First and second are ILP methods, third is statistic one and forth is a simplex algorithm one.