In the last three decades, light's orbital angular momentum (OAM) has been of great interest
because it has unique characteristics that make it sought after in many research fields …

Characterizing the orbital-angular-momentum (OAM) modes is critically important for OAM-
encoded data transfer. However, traditional characterizing approaches rely on either …

We have developed a structured beams theory, computer simulation and experiment that
have lost rotational symmetry and propagate in a medium with a general astigmatism. It …

Free-space optical (FSO) communication has gained much interest due to its capability of
providing not only a cost-efficient solution where the optical fiber is too expensive or too …

Due to a great many superior features of infrared light communication (ILC), like high
capacity and strong privacy, ILC is considered a potential candidate for serving the high …

Tunable circular devices made of liquid crystals or other materials, like lenses, axicons or
phase plates are often constrained by limitations in size, tunability, power and other …

Interest in optical wireless communications (OWC) as a possible complement to RF
technology has increased recently. However, the propagation of optical beams through the …

Due to the unique features, orbital angular momentum (OAM) beams have been widely
explored for different applications. Accurate determination of the topological charge (TC) of …

The structured beams especially with spatially varying phase distribution have attracted
tremendous attention in both physics and engineering. Recently, studies have shown that …

Terahertz (THz) orbital angular momentum (OAM) beams have tremendous potential for
tackling the capacity crunch in high-speed wireless communication. However, conventional …