Research Article
Multitarget Position-Sensitivity Security Transmission with OAM-DM Based on FDA
Figure 7
Intensity patterns. The desired range is d0, d ≠ d0. (a) |l| = 1. (b) |l| = 1, random Nx. (c) |l| = 2. (d) |l| = 2, random Nx. The color changing from blue to green, yellow, and red indicates an increasing intensity of the electric field.
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