Table 1 Power transfer and total crosstalk of each OAM channel

From: Metamaterial-based real-time communication with high information density by multipath twisting of acoustic wave

Power Transfer (dB)

T1 l1 = +1

T1 l2 = −1

T2 l1 = +1

T2 l2 = −1

Crosstalk (dB)

R1 l1 = +1

−7.59

−29.62

−21.04

−29.07

−12.33

R1 l2 = −1

−21.39

−9.64

−27.45

−33.46

−10.57

R2 l1 = +1

−24.11

−33.72

−8.20

−29.58

−14.47

R2 l2 = −1

−32.44

−31.54

−20.37

−8.5

−11.31

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