Cascade acousto-optic diffraction for optical communication systems

Two variants of cascade acousto-optic diffraction for the shifting the frequency of an optical beam in considerable values are described and investigated. Methods are based on the peculiarities of the anisotropic diffraction in anisotropy media and allow the points of diffraction to separate. The methods are confirmed experimentally with using of TeO2 and LiNbO3 mono crystals. A number of applications for the optical processing and pulse processing are proposed. The wavelength-division-multiplexing and the optical image compressing on the basis of the proposed diffraction are discussed.