Visible light communication (VLC), as an interdisciplinary paradigm, spans various technologies from basic device sciences to system engineering. Micro-size light-emitting diodes (micro-LEDs), beca…
An ultra-wideband orbital-angular-momentum (OAM) mode generator has been proposed and demonstrated both theoretically and experimentally, which is based on a helical long period fiber grating (HLPG…
In this study, an ultra-broadband orbital angular momentum (OAM) mode generator based on a phase-modulated helical long period fiber grating (HLPG) working at high-radial order cladding mode is fir…