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One of the main issues with optical networks is the problem of blocking that affects the performance of the network. Several approaches have been established in order to turn a blocking network into a non-blocking one. These approaches can be classified as strictly non-blocking, wide sense non-blocking and rearrangeably non-blocking. Benes network is a long established rearrangeable network to connect large switching elements. This network has the characteristic of providing multiple paths for same output request. For providing different paths several routing algorithms have been proposed in...

In the existing research literature a large number of regular MINs with their performance characteristics are available. However, there is relatively smaller number of irregular MINs. The present research work is an endeavour to study the importance and design of fault-tolerant MINs. It is with the use of various techniques based on high degree of parallelism, self-routing and modularity that three new dynamic irregular MINs have been proposed in order to improve their fault-tolerance, performance and reliability. The irregular networks have been considered because of their advantage of the...