Alexander Lvov (IMAGE) Ural Federal University Caption Alexander Lvov, a junior researcher at the laboratory of fiber technologies and photonics of the Ural Federal University, checks the radiation that has passed through the light guide on a computer. Credit UrFU / Vladimir Petrov Usage Restrictions Photo may be freely used to illustrate this topic, but please credit the author of the image: UrFU / Vladimir Petrov License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.