Application of nondiffracting beams to wireless optical communications

In wireless optical communications, information is carried by coherent laser beams propagating through the free space. In realized communication channels, the standard beams created directly in the laser resonator are utilized. In recent time, an increasing attention has been focused on the so-called nondiffracting beams generated by auxiliary optical systems. In this paper, the theoretical and experimental aspects of the nondiffracting propagation of light are discussed and geometrical parameters and physical properties of nondiffracting beams promising for wireless communications reviewed.