Multiwavelength optical networks capabilities for next generation Internet

This thesis addresses the important problem of how to bridge the gap between Dense-Wavelength Division Multiplexed (DWDM) optical networks and Next-Generation Internet (NGI) and examines, at both the physical layer and the higher layers protocol, how the capabilities of DWDM technology can be used: (1) To support the explosive traffic demands of NGI, and (2) To take DWDM from a mere fiber multiplication method to its new phase of becoming the world's intelligent bandwidth infrastructure.; To meet this explosive demand, this work presents a novel, dynamic, survivable, and scalable ultra-high speed DWDM-based Self-Healing Ring (SHR) network topology capable of supporting an aggregate network capacity in the order of a Tb/s per fiber. Specifically, this thesis examines, through computer simulation and modeling, the technological requirements and assesses the performance analysis and feasibility for implementing such network fabric based on SHR network topology and DWDM technology. To ensure that the network is scalable, a network planning and optimization strategy, at the initial phase of the system design, will also be developed.; The second main issue that this thesis will address is how to move DWDM from a mere “dumb” fiber multiplier technology toward an optical networking infrastructure with transport, multiplexing, routing, supervision, and survivability supported at the optical layer. This thesis investigates two different options for the implementation of one of the most critical networking functionality associated with ultra high capacity transport networks, namely “Network Survivability”. The first option assumes that the full protection/restoration functionality can be implemented at the optical layer. We present a novel mesh-based hybrid optical protection scheme that utilizes multifiber physical links along with hierarchical OXC structure. The second option assumes that protection/restoration functionality can be allocated between the optical layer and the data layer.; This thesis examines the notion of supporting “data directly over optics”. This work combines recent advances in multiprotocol label switching (MPLS) traffic engineering control plane constructs with Optical Cross-Connects (OXC) technology to provide a framework for optical bandwidth management and for the real-time provisioning of optical channels in automatically switched optical networks. Finally, we present and develop a simple and integrated hybrid protection/restoration scheme that can be coordinated at both the IP and WDM layers.