This work addresses the topic of optical networks cross-layer design with a focus on physical-layer-impairment-aware design. Contributors captures both the physical-layer-aware network design as well as the latest advances in service-layer-aware network design. Treatment of topics such as, optical transmissions which are prone to signal impairments, dense packing of wavelengths, dispersion, crosstalk, etc., as well as how to design the network to mitigate such impairments, are all covered.

Introduction.- A tutorial of physical layer impairments in optical networks.- Dynamic Impairment-Aware Routing and Wavelength Assignment.- Routing andWavelength Assignment in WDM Networks with Mixed Line Rates.- Considering Linear and Non-Linear Impairments in Planning WDM Networks.- Cross-Layer Control of Semi-Transparent Optical Networks under Physical-Parameter Uncertainty.- Analytical models for QoT-aware RWA performance.- Impairment-Aware Control Plane Architectures to Handle Optical Networks of the Future.- QoT-Aware Survivable Network Design.- Energy-efficient traffic engineering.- Multi-layer Protection with Integrated Routing in MPLS-over-WDM Optical Networks.- Cross-Layer Survivability.- Photonics Grids and Clouds.- Bringing Optical Network Control to the User Facilities: Evolution of the User Controlled Light Path Provisioning Paradigm.-Cross-Layer Network Design and Control Testbeds.- Free Space Optical Wireless Network.