Visualization 2: High-order optical vortex generation in a few-mode fiber via cascaded acoustically driven vector mode conversion

The right-handed circularly polarized mode was converted to -1 order vortex mode, which was further converted to -2 order vortex mode, as the RF source was tuned on and as its frequency was varied. Originally published in Optics Letters on 01 November 2016 (ol-41-21-5082)