Metallic components such as plasmonic gratings and plasmonic lenses are routinely used to
convert free-space beams into propagating surface plasmon polaritons and vice versa. This …

A conventional propagating free-space laser beam typically has an approximately flat phase
front and exhibits an intensity profile that decreases as a function of the radial distance from …

We propose an approach to efficiently generate and multiplex optical orbital angular
momentum (OAM) modes in a fiber with a ring refractive index profile by using multiple …

We demonstrate a 2 Tbit/s free-space data link using two orthogonal orbital angular
momentum beams each carrying 25 different wavelength-division-multiplexing channels …

We study the question of robustness of optical vortices (OVs) in twisted anisotropic and
elliptical fibres with respect to external perturbations which do not depend on the …

We have theoretically studied long-period spun l-helicoidal fibers and their ability to
generate singular beams from regular ones. On the basis of perturbation theory in the …

The work on this project focused on the design, fabrication, and demonstration of photonic
integrated circuits PICs which create, multiplex, and demultiplex light beams with orbital …