Fig. 3: Parallel transmission of two binary images via Airy-Talbot modulation.
From: Superwavelength self-healing of spoof surface sonic Airy-Talbot waves
a Schematic diagram of the digital coding and parallel transmission using Airy-Talbot sound. Two binary images of a lighthouse and a panda (each with 128 × 128 pixels) using two channels (Ch1/Ch2) are encoded by Airy beams and then transmitted along curved paths marked in purple. Ch1 is obstructed by a superwavelength (ka = 8.8) cylinder. b Images are independently retrieved from the received data carried by Airy beams in Ch1 and Ch2. c Comparison between the objective and received output. d Zoomed-in view of the red box part in (b). The two colors of pixel are encoded by binary information “0” and “1”. The images of lighthouse and panda are hand-painted and converted from RGB color to binary images in Adobe Photoshop 2022.
