Zyczkowski, Marek, Konrad Dominik Brewczynski, and Mateusz Karol. “Innovative Security Technology for Optical Fiber Data Transmission Using Optical Vortex”. Proceedings of Engineering and Technology Innovation 50 (August 30, 2017): 1-6. Accessed November 28, 2022. https://ojs.imeti.org/index.php/PETI/article/view/946.