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以GT-wave光纤为代表的抽运增益一体化复合功能激光光纤是长距离分布式侧面抽运光纤合束器的典型代表。GT-wave复合功能激光光纤具有良好的结构扩展性,抽运注入路数可递增;抽运光注入吸收和信号光增益放大都自然而均匀地实现,可进行有效热管理,转换效率高,稳定性好。美国IPG公司基于此类光纤已经实现了10 k W激光输出,但国内公开报道的GT-wave光纤激光器/放大器输出功率仍然停留在1 k W左右的水平,因此具有很大的提升空间。2015年8月,中国工程物理研究院激光聚变研究中心自主研发出了(2+1)型GT-
Pump-gain integrated laser fiber, typified by GT-wave fiber, is a typical example of a long-range distributed side-beam fiber combiner. The GT-wave composite functional laser fiber has good structural expansibility and the number of pumping injection channels can be increased. Both pumping light absorption and signal light gain amplification are naturally and uniformly realized, and efficient heat management can be achieved, and the conversion efficiency is high and stable Good sex. US IPG based on this type of optical fiber has been achieved 10 k W laser output, but the domestic publicly reported GT-wave fiber laser / amplifier output power remains at about 1 k W level, so there is a lot of room for improvement. In August 2015, the Laser Fusion Research Center of China Academy of Engineering Physics developed the (2 + 1) GT-