Touchless Input/Output Interface for Device-to-Device Communication

Kang Fu; Binju Wang; Jianwei Fu; Jiabin Yan; Pengzhan Liu; Yongjin Wang

doi:10.1021/acsomega.3c05252

Touchless Input/Output Interface for Device-to-Device Communication

ACS Omega. 2023 Sep 14;8(38):35336-35342. doi: 10.1021/acsomega.3c05252. eCollection 2023 Sep 26.

Authors

Kang Fu¹, Binju Wang¹, Jianwei Fu¹, Jiabin Yan¹, Pengzhan Liu¹, Yongjin Wang¹

Affiliation

¹ GaN Optoelectronic Integration International Cooperation Joint Laboratory of Jiangsu Province, Nanjing University of Posts and Telecommunications, Nanjing 210003, China.

Abstract

Multiple quantum well (MQW) III-nitride diodes show selectable functionalities of light-emitting and light-detecting behaviors, enabling direct touchless device-to-device communication. Here, we propose and demonstrate a touchless input/output (I/O) interface using a single MQW III-nitride diode. By integrating an MQW III-nitride diode with a memory via a control circuit, optical signals are converted into electrical ones to be written into a memory, and consequently, electrical information is read out from the memory to be translated into optical signals for visible light communication (VLC). The MQW III-nitride diode can not only lead to a touchless ″writing″ action but also offer a ″reading″ process through light. Such touchless I/O interface would provide new forms of interactivity for device-to-device communication technologies.