This twisting characteristic, known as orbital angular momentum (OAM), has been exploited by researchers in the past, with some showing that it can be used to transmit 2.5 terabits of data per second — the carrying capacity of more than 66 DVDs — through an optical fibre. (sciencedaily.com)
Light carrying orbital angular momentum is created by twisting the wave - front of light into a helical shape, forming a spiral. (sciencedaily.com)
In this way, a disk can be modeled as a series of concentric wires that slowly exchange orbital angular momentum among one another. (caltech.edu)