Light beams carrying OAM (orbital angular momentum) exploit the transverse spatial distribution of photons and have helical phase front. In recent years. similar to the WDM (wavelength-division multiplexing) technology. OAM multiplexing technology has attracted widespread interest and made remarkable progress in high-speed and large-capacity optical signal transmission. https://rrkjscrgonka.collectblogs.com/79712160/flexible-and-wearable-battery-free-backscatter-wireless-communication-system-for-colour-imaging