All light has structure, but only recently has it been possible to control it in all its degrees of
freedom and dimensions, fuelling fundamental advances and applications alike. Here we …

Orbital angular momentum (OAM), which describes tailoring the spatial physical dimension
of light waves into a helical phase structure, has given rise to many applications in optical …

BACKGROUND Optical vortices provide one of the promising solutions for enhancing the
capacity of data multiplexing to meet an unprecedented growth in big data and internet traffic …

Thirty years ago, Coullet et al. proposed that a special optical field exists in laser cavities
bearing some analogy with the superfluid vortex. Since then, optical vortices have been …

With the ever-increasing demand for data and the radio frequency spectrum becoming
congested, free space optics (FSO) may find a niche for situations where fiber is too …

Multiplexing multiple orbital angular momentum (OAM) channels enables high-capacity
optical communication. However, optical scattering from ambient microparticles in the …

The efficient transport and engineering of photonic orbital angular momentum (OAM) lie at
the heart of various related classical and quantum applications. Here, by leveraging the …

Optical communication is an integral part of the modern economy, having all but replaced
electronic communication systems. Future growth in bandwidth appears to be on the horizon …

Holography has been widely used in optical displays, high-security optical encryption, and
optical artificial intelligence. Optical multiplexing technologies by utilizing various …

Optical chaotic signals emitted from an external-cavity feedback or injected laser diode
enable small-signal information concealment in a noise-like carrier for secure optical …