MUMBAI, India, Feb. 27 -- Intellectual Property India has published a patent application (202541133334 A) filed by Dr. Kanapathy Gopalakrishnan, Bangalore, Karnataka, on Dec. 30, 2025, for 'system, design, method and development of underwater communication using li-fi technology.'
Inventor(s) include Mithun G; Prajwal M; Sidramanna; Sumith P Pawar; Rashmi G P; and Ravikumar M G.
The application for the patent was published on Feb. 27, under issue no. 09/2026.
According to the abstract released by the Intellectual Property India: "The patent disclosure covers System, Design, Method and Development of Underwater Communication Using Li-Fi Technology. Underwater communication is a challenging task because traditional wireless methods such as Wi-Fi, Bluetooth, or radio frequency cannot transmit data effectively in water. This is mainly due to the high absorption and scattering of electromagnetic waves in the underwater environment, which reduces their range and performance. To solve this problem, the proposed project uses Li-Fi (Light Fidelity) technology, which works on the principle of visible light communication. Li-Fi uses light waves instead of radio waves for data transfer, making it suitable for short-distance underwater communication. In this project, an experimental setup is developed to transmit both audio and data signals through visible light under water. A laser diode or high-power LED is used as the transmitter to send the information in the form of light, while a solar panel or photodiode is used as the receiver to detect the transmitted signal. The system uses a PAM8403 amplifier to enhance the audio signal and an Arduino UNO or NANO microcontroller to control the digital data transmission. The received light signal is converted back into electrical form, amplified, and then reproduced as sound or displayed . This project successfully demonstrates that visible light can be used for underwater communication where radio signals fail to work. The system is low-cost, energy-efficient, and provides faster and more secure communication over short distances. Though the range is limited, the concept can be further improved and used in applications like underwater robotics, submarine communication, and marine data collection systems."
Disclaimer: Curated by HT Syndication.
