Orbital angular momentum (OAM) has aroused a widespread interest in many fields,
especially in telecommunications due to its potential for unleashing new capacity in the …

Cylindrical vector beams and vortex beams, two types of typical singular optical beams
characterized by axially symmetric polarization and helical phase front, possess the unique …

Orbital angular momentum (OAM), which describes the “phase twist”(helical phase pattern)
of light beams, has recently gained interest due to its potential applications in many diverse …

Internet data traffic capacity is rapidly reaching limits imposed by optical fiber nonlinear
effects. Having almost exhausted available degrees of freedom to orthogonally multiplex …

Optical vortex beams, possessing spatial polarization or phase singularities, have intriguing
properties such as the ability to yield super-resolved spots under focussing, and the ability to …

Light's orbital angular momentum (OAM) is a conserved quantity in cylindrically symmetric
media. However, it is easily destroyed by free-space turbulence or fiber bends, because …

Spatially structured optical fields have been used to enhance the functionality of a wide
variety of systems that use light for sensing or information transfer. As higher-dimensional …

Recent work has shown that irradiation with light possessing orbital angular momentum
(OAM) and an associated phase singularity, that is an optical vortex, twists a variety of …

Super-resolution optical microscopy, which gives access to finer details of objects, is highly
desired for fields of nanomaterial, nanobiology, nanophotonics, etc. Many efforts, including …

We experimentally demonstrated a high-order optical vortex pulsed laser based on a mode
selective all-fiber fused coupler composed of a single-mode fiber (SMF) and a few-mode …