Indian Institute of Technology (IIT) Guwahati has completed the transfer of technology (ToT) of a novel free-space optical communication system to the telecom industry. According to the institute, the advanced communication system uses wavefront modulated light beams for wireless error-free data transmission through free space rather than through optical fibre.

The technology has been developed by Prof. Bosanta Ranjan Boruah, Department of Physics, IIT Guwahati, and Dr Santanu Konwar, assistant professor, Department of Physics, Abhayapuri College, Assam. The technology has been granted a US patent dated June 2, 2020, a Japanese patent dated December 23, 2021, and a Korean patent dated December 28, 2022.

According to Prof. Bosanta Ranjan Boruah, free space optical communication is likely to play a crucial role in the coming days both in the case of indoor applications and outdoor especially in the defence sector. The research team has experimentally demonstrated the distortion-free transmission of text messages and images in a laboratory environment even in the presence of turbulence and also outside the laboratory. The communication system can thus be used for high-speed and secured communication between two remote sites in the line of sight with virtually no possibility of any unauthorised interception.