Packet lters are a mechanism for eeciently demultiplexing network packets to application endpoints. There is currently no general, formal speciication method for packet lters that allows for easy or eecient composition of speciications. In this paper we present an automatic approach that achieves all of these goals. We approach packet lter speciication as a language recognition problem: each lt...

Sensitivity limits are usually determined using the Cram\'er-Rao bound. Recently this approach has been used to obtain ultimate resolution limit for estimation of separation between two incoherent point sources. However, methods that saturate these limits, require full measurement statistics, which can be challenging access. In work, we introduce a simple superresolution protocol estimate therm...

The concept of multifunctional reflection-mode gratings that are based on rod-type photonic crystals (PhCs) with [Formula: see text] symmetry is introduced. specific modal properties lead to the vanishing dependence first-negative-order maximum angle incidence and nearly sinusoidal redistribution incident-wave energy between zero order (specular reflection) first negative diffraction (deflectio...

A demultiplexer is an electronic circuit designed to separate two or more combined signals. We report on a demultiplexer architecture for bridging from the submicrometer dimensions of lithographic patterning to the nanometer-scale dimensions that can be achieved through nanofabrication methods for the selective addressing of ultrahigh-density nanowire circuits. Order log2(N) large wires are req...