Demo Abstract: Seamless High-Speed Optical Communication for Mobile Wide-Area Using Diffused Infrared Laser

We present a demo showcasing the capabilities of an infrared (IR)-based light communication system with a movable receiver. The system employs IR laser (VCSEL) together with scattering lens as the transmitter and an avalanche photo-diode (APD) with collimator as the receiver, using the reflection cross section existing in the environment (ceilings, walls, etc.) to spread the coverage of the communication system. The demonstration involves transmitting messages encoded as binary data through modulated IR light signals to the movable receiver. The receiver captures the signals using the APD, which are then decoded to retrieve the original message. The demonstration aims to showcase the robustness of the system against various sources of interference and the flexibility of the movable receiver to capture signals from different angles and positions. We believe that our demonstration will be useful for showcasing the potential of IR-based light communication in various applications (e.g., wireless VR/AR and high speed reliable data link) over more traditional communication methods that have limitations such as privacy and bandwidth.