International Research Journal of Education and Technology

This paper presents the design and development of a Short-Range Li-Fi Communication Module for efficient data transfer in indoor environments. Utilizing 650 nm laser modules for transmission and solar panels for reception, the system employs On-Off Keying (OOK) modulation for secure and high-speed communication. The system's benefits include low energy consumption, high-speed data transfer, and immunity to electromagnetic interference, making it ideal for applications like smart homes, IoT devices, and secure wireless data transfer in noise-sensitive settings. The paper discusses the system's design principles, methodology, and potential applications in short-range communication environments.

Keywords: Visible Light Communication (VLC), Optical Wireless Communication, On-Off Keying (OOK), Laser Communication, Short-Range Communication, Data Transmission.