The Siberian branch of the Russian Academy of Sciences Institute of Automation and Measurement and Electrical and the University of Birmingham Aston University, developed the world's longest fiber laser, 300 km. Scholars have confirmed that if the optical fiber is required to transmit a minimum of 1.5 km of light waves, 300 km is the limit. The deputy director of the institute, Sergey Babin, director of the cable laboratory, explained that the laser is like an enhanced environment between two planes. "Once the length exceeds 300 km, the fixed wave can not be formed because the waveform is scattered , Can not reach the end ". Scholars plan to use the long fiber laser for long-distance information transmission without the need for optical enhancement. He can also apply information coding to improve the sensitivity and range of sensing systems based on optical reflections. The laser is also very promising in the study of weak eddy currents, as the past has only been studied by fluid dynamics and plasmas. The Institute started optical fiber research in 2002, but has made a number of remarkable achievements that have attracted worldwide attention. In the project of altering the laser oscillation wavelength in a pure fiber system, he got the world's largest range of variation.