Xiaocong Yuan

TL;DR: Plasmonic couplers that overcome limits in the polarization sensitivity of the coupling efficiency and in controlling the directionality of the SPPs are designed and demonstrated using polarization-sensitive apertures in a gold film.

TL;DR: The authors survey the steady refinement of techniques used to create optical vortices, and explore their applications, which include sophisticated optical computing processes, novel microscopy and imaging techniques, the creation of ‘optical tweezers’ to trap particles of matter, and optical machining using light to pattern structures on the nanoscale.

TL;DR: In this article, the Dammann optical vortex gratings (DOVGs) are used to realize multiplexing based on the generation, transmission and detection of optical angular momentum (OAM).

TL;DR: In this article, the coupling of surface plasmon polaritons (SPPs) between spatially separated graphene sheets was theoretically investigated, and it was employed to design zero insertion loss optical splitters, 1'×'2 digital optical spatial switches, and ultra-compact Mach-Zehnder interferometers with the arm length far below the diffraction limit.

TL;DR: Investigation of a mechanism by which metallic particles are attracted and trapped by plasmonic tweezers when surface plasmons are excited and focused by a radially polarized beam in a high-numerical-aperture microscopic configuration finds that it is the sum of both gradient and scattering forces acting in the same direction established by the strong coupling between the metallic particle and the highly focused plAsmonic field.