A study on all to all broadcast in wdm optical networks with extended topologies

Abstract

All to all broadcast communication in a network is to distribute an exclusive message from each node to every other node It is a vital requirement in high performance computing and communication applications including enterprises operating data centers It is also a core issue in telecommunication network where each node in the network needs to gather information about all the other nodes for efficient management of network resources WDM optical networks act as the backbone for telecommunication networks Wavelengths are precious resources in WDM optical networks and its usage must be limited to reduce network cost and complexity Regular network topologies need to be modified so as to favour reduction in network operational cost and complexity In this thesis the main focus is to propose efficient wavelength allotment methods and determine wavelength resource requirements to support optical all to all broadcast in extended primary network topologies under single hop routing model Firstly a linear array is extended by directly linking all nodes which are separated by one intermediate node with additional fibers which is referred as linear array with 2 length extension The wavelength allotment methods are proposed to realize all to all broadcast over WDM optical linear array with 2 length extension under multiple unicast routing model and the minimum wavelength number needed is determined The minimum wavelength number needed to support all to all broadcast in a linear array with 2 length extension is reduced by 50 when compared with that of a linear array network. newline newline newline