Herein, we have discussed three major methods which have been generally employed for
the generation of optical beams with orbital angular momentum (OAM). These methods …

The orbital angular momentum (OAM) of light has been implemented as an information
carrier in OAM holography. Holographic information can be multiplexed in theoretical …

Semiconductor devices capable of generating a vortex beam with a specific orbital angular
momentum (OAM) order are highly attractive for applications ranging from nanoparticle …

Phase-structured light beams carrying orbital angular momentum (OAM) have a wide range
of applications ranging from particle trapping to optical communication. Many techniques …

We report the use of 3D-printed microscale spiral phase plates to generate orbital angular
momentum (OAM) carrying beams. We confirm that the generated beams have high purity …

Replacing part of a conventional optical circuit with a topological photonic system allows for
various controls of optical vortices in the optical circuit. As an underlying technology for this …

In this study, we investigate a novel design of an on-chip nested coupled ring resonator to
enhance the quality factor and the effective length of the resonator. The configuration …

We propose and numerically verify a design approach to a grating coupler (GC) for in-plane
generation and propagation of quasi-TE vortex modes with azimuthal order±1 within …

This paper presents an analytical procedure for designing orbital angular momentum (OAM)
multiplexers with the capability of generating multiple multiplexed beams with different …

To improve the transmission capacity of an optical system, different multiplexing schemes
have been proposed, such as optical time division multiplexing (OTDM), wavelength division …