SEARCH Articles Figures Tables Grate Gratings optically-induced Optical Phase Conjugation with Orientation and Thermal Gratings Optical diffraction grating Optical fiber grating technology Optical fibre grating Optical fibre grating Bragg Optical fibre grating long period Optical grating calorimetry Optical grating patterns Optical properties diffraction gratings Optical waveguide grating Optical-fibre grating sensor Optically Switchable Reflection Gratings Optically Tunable Diffraction Gratings Optically Tunable Diffraction Gratings in Polymer-Stabilized Liquid Crystals