Guided-Wave Acoustooptics reviews Bragg interactions between guided optical waves and acoustic waves, both in terms of basic theory and in the substrates LiNbO3, ZnO/SiO2 and GaAs, as well as the sideband modulators and deflectors that can be manufactured with this technology. Further applications described include light beam modulation and deflection, multiport switching in communications and spectral analysis, correlation and convolution in RF signal processing.