In optical networks regenerators have to be placed on lightpaths every d nodes in order to regenerate the signal. In addition, grooming enables the use of the same regenerator by several lightpaths. Up to g (the grooming factor) lightpaths can use the same regenerator. In this work we consider the problem of minimizing the number of regenerators used in traffic grooming in optical networks. Sta...

Packet switched networks and message multiplexing have been a major upgrade for industrial systems communications. In the avionics domain, this evolution was brought by the introduction of Avionics Full Duplex Switched Ethernet (AFDX). Guaranteed upper bounds of end-to-end delays for messages transmitted over an AFDX network are mandatory for certification reasons. In this article, we present t...

Network on-Chip (NoC) is an interconnect fabric to connect sub-system blocks on a chip. The NoC should provide high bandwidth and low latency, should consume low energy, and should be compact. However, all these requirements are at odds and require tradeoffs at all levels. In this chapter, we discuss issues and challenges for future NoCs with demands for high bandwidth and low energy. Next, we ...

We report an electrical-field switched color device using a polymer-stabilized blue-phase (PSBP) liquid crystal in which the Bragg-reflected color of the blue phase (BP) can be switched to reflect a second color. The phase-separated three-dimensional polymer network transcribes the cubic structure of a BP liquid crystal and restrains the deformation of cubic lattice by the external electric fie...

Recent advances in photonic switching have paved the way for realizing all-optical time switched networks. The current technology of Wavelength Division Multiplexing (WDM) offers bandwidth granularity that match peak electronic transmission speed by dividing the fiber bandwidth into multiple wavelengths. However, the bandwidth of a single wavelength is too large for certain traffic. Time Divisi...

Classic IP traffic engineering considers a fixed IP layer topology. In this draft, we address the limitations imposed by such static network topology. This work is motivated by introducing dynamically provisioned links to improve static IP traffic engineering constraints, and leverage the freedom of provisioning links on demand. This draft introduces the concept of a closed-loop link provisioni...

The rising tide of data-intensive, massive scale cluster computing is creating new challenges for traditional, hierarchical data center networks. In response to this challenge, the research community has begun exploring novel interconnect topologies to provide high bisection bandwidth—examples include Fat trees [2, 12, 8], DCell [9], and BCube [10], among a rapidly growing set of alternatives, ...

Embedded applications have become more and more complex, increasing the demands on the communication network. For reasons such as safety and usability, there are real-time constraints that must be met. Also, to offer high performance, network protocols should offer efficient user services aimed at specific types of communication. At the same time, it is desirable to design and implement embedde...