I am attending an introductory course of optics and photonics and we just started to study optical fibers for digital communications. However, I have started wondering about using optical fibers to transmit energy. I have done some research on the internet and I have found some insights on power-over-fiber technologies but there isn't really a lot of material, so here I am.
Is power-over-fiber a technology which in the future can be develop in order to compete with electrical power transfer or there are physical limits?
As far as I know we have an efficent device to convert electrical to optical power, namely the laser. Optical fibers can transmit power with an attenuation as low as 0.18 dB/Km which seem pretty good to me. Maybe the problem can be the efficency of photodiodes at the end of the line?
P.S. I'm in the final year of my bachelor degree course in Engineering Physics and I'm trying to understand which technologies are likely to be developed in the future in order to invest my time studying something promising.