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 …

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 …

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 …

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

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

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 …

Coding metasurfaces have revolutionized electromagnetic device development by enabling
precise electromagnetic wave manipulation. While spatial phase modulation alone offers …

Signal quality is critical in free space optical (FSO) communications. Many technologies and
methods are applied to enhance the signal quality of an optical communication system …