Ultraviolet-Visible Dual-Band Light Emitting and Detecting Diode for Multipurpose Optical Wireless Communication Applications

An advanced dual-band optical wireless communication device with an AlGaN-mini-sized light-emitting and detecting diode featuring controllable dual-wavelength operation. The diode achieves 222 MHz and 96 MHz optical bandwidths, enabling high-speed encrypted data transmission and up-conversion.