BACK TO BASICS - PHOTOPHONE?!
Flight Lieutenant AT Kishore
Chief Instructor, Director Dhanwantari Drone Pilot Academy
Why did A.G.Bell first visualize about a Photophone and why did we not invent it yet?
Because till date we do not know how to be like a swan sepeate various light components into different colors effectively, leaving it only best done by LASERS, mono chromatic and left acromatic light to it self un-touched till date in a big way
The newer technologies that would see fruition by mid 2030's could be considered 7th generation wireless leaving 6th generation to be an advanced version of 5g.
7th generation wireless will be all about visible light communications