Network Architectures -- Enabling Architectures for Next Generation Optical Networks -- Hybrid Hierarchical Optical Networks -- Advances in Passive Optical Networks (PONS) -- Regional-Metro Optical Networks -- Switching -- Optical Packet Switching -- Waveband Switching: A New Frontier in Optical WDM Networks -- Optical Burst Switching: Quality of Service, Multicast, and Operation and Maintenance -- Signaling Protocols and Network Operation -- GMPLS-Based Exchange Points: Architecture and Functionality -- The GMPLS Control Plane Architecture for Optical Networks -- Operational Aspects of Mesh Networking in WDM Optical Networks -- Traffic Grooming -- Traffic Grooming in WDM Networks -- A Practical and Cost-Effective Approach to Efficient Traffic Grooming in WDM Mesh Networks -- Protection and Restoration -- A Survey of Survivability Techniques for Optical WDM Networks -- Tradeoffs and Comparison of Restoration Strategies in Optical WDM Networks -- Facilitating Service Level Agreements with Restoration Speed Requirements -- Failure Location in WDM Networks -- Testbeds -- A Multi-Layer Switched GMPLS Optical Network -- HORNET: A Packet Switched WDM Metropolitan Network.