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双包层掺镱光纤技术使高功率光纤激光器和放大器成为可能。最近几年随着制造技术和器件应用技术的发展双包层掺镱光纤也有了飞速发展,但是激光器的输出功率却受到受激拉曼散射和布里渊散射等非线性效应的限制,可以通过降低纤芯数值孔径、大模面积等方式来克服这种限制。分析和讨论了双包层掺镱光纤的激光放大原理、大模面积双包层掺镱光纤、多芯双包层掺镱光纤和微结构双包层掺镱光纤,介绍了掺镱光纤的研究现状和发展趋势。
Double-clad ytterbium-doped fiber technology makes high-power fiber lasers and amplifiers possible. In recent years, with the development of manufacturing technology and device application technology, double-clad ytterbium-doped optical fiber has also been developed rapidly. However, the laser output power is limited by nonlinear effects such as stimulated Raman scattering and Brillouin scattering and can be reduced by reducing Core numerical aperture, large mode area to overcome this limitation. The principle of laser amplification of double-clad ytterbium-doped fiber, the large-area double-clad ytterbium-doped fiber, the multi-core double-clad ytterbium-doped fiber and the microstructure double-clad ytterbium-doped fiber were analyzed and discussed. Status quo and development trend.