Quaranta, GiorgioBasset, GuillaumeMartin, Olivier J. F.Gallinet, Benjamin2018-12-132018-12-132018-12-132018-09-0110.1002/lpor.201800017https://infoscience.epfl.ch/handle/20.500.14299/152289WOS:000444421000002Resonant waveguide gratings (RWGs), also known as guided mode resonant (GMR) gratings or waveguide-mode resonant gratings, are dielectric structures where these resonant diffractive elements benefit from lateral leaky guided modes from UV to microwave frequencies in many different configurations. A broad range of optical effects are obtained using RWGs such as waveguide coupling, filtering, focusing, field enhancement and nonlinear effects, magneto-optical Kerr effect, or electromagnetically induced transparency. Thanks to their high degree of optical tunability (wavelength, phase, polarization, intensity) and the variety of fabrication processes and materials available, RWGs have been implemented in a broad scope of applications in research and industry: refractive index and fluorescence biosensors, solar cells and photodetectors, signal processing, polarizers and wave plates, spectrometers, active tunable filters, mirrors for lasers and optical security features. The aim of this review is to discuss the latest developments in the field including numerical modeling, manufacturing, the physics, and applications of RWGs. Scientists and engineers interested in using RWGs for their application will also find links to the standard tools and references in modeling and fabrication according to their needs.OpticsPhysics, AppliedPhysics, Condensed MatterOpticsPhysicscorrugated waveguidesgrating couplersguided mode resonancesleaky mode resonancesresonant waveguide gratingssurface-plasmon resonanceelectron-beam lithographywide-band reflectorselectromagnetically induced transparency2-photon fluorescence excitationminiature optical spectrometerdiscrete-dipole approximationzero-contrast gratingsfourier-modal methodscell-based assaystext::journal::journal article::review article