Figure 6
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The OAM-domain parallel 
gates and 
gates achieved by the three-layer structure. (A) OAM spectral shaping function for dual 
gates. (B) The entire 
matrix operator made up of two 
gates. (C) Dual 
gates tested with input superposed OAM states of 
and 
one-by-one. (D) and (E) Performances of parallel 
and 
gates as functions of OAM channels separation, respectively.
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