Multitarget Position-Sensitivity Security Transmission with OAM-DM Based on FDA

<div>Phase fronts. The desired range is d0, (a) d = d0, l = 1. (b) d ≠ d0, l = 1. (c) d ≠ d0, l = 1, random Nx. (d) d = d0, l = 2. (e) d ≠ d0, l = 2. (f) d ≠ d0, l = 2, random Nx. The color changing from blue to green, yellow, and red back to blue again indicates the phases changing from 0 to 2π.</div>

Security and Communication Networks

fig8

Figure 8

Figure 8: Multitarget Position-Sensitivity Security Transmission with OAM-DM Based on FDA 