Study of U Band Optical Fiber Amplifiers (1600 - 1700 nm)

Abstract

In recent years, with the digital transformation of various industries, the demand for network data transmission has been growing exponentially. Optical networks, as the underlying bearer networks, are crucial for network development, so there is an urgent need to improve the capacity of optical fibre communication systems, and the development of U-band has become one of the important ways to expand the capacity of the system. The development of U-band (1650-1700 nm) optical amplifiers based on doped rare-earth ion optical fibres has become an optimal solution for the development of U-band active devices and the expansion of communication system capacity. This paper mainly introduces the background and working principle of fibre-optic amplifiers, focuses on the research direction and progress of U-band fibre-optic amplifiers, and introduces the working wavelength and working principle of this band fibre-optic amplifiers, as well as the current domestic and international research status. Finally, the development trend of U-band fibre optic amplifier is summarized.