大直径光纤端帽的制作与熔接

Production and Splicing Technology of Large Diameter Fiber End Cap

为了避免高功率光纤激光器输出的激光对双包层光纤端面造成损伤,设计并制作了光纤端帽。使用新型CO2激光器光纤熔接机完成了双包层光纤与端帽的熔接,研究了双包层光纤与端帽熔接的相关工艺与方法。利用高功率连续激光对端帽的性能进行了测试,实验结果表明,熔接有光纤端帽的双包层光纤可以承受507 W连续激光的输出并且没有发生损伤。熔接有端帽的光纤激光器的斜率效率为64.05%,光束质量与未熔接有端帽时相同。

In order to avoid the damage of the double-clad fiber end surface by high power laser, a fiber end cap was designed and fabricated. A new type LZM-100 CO2 fiber splicer was utilized to splice the double-clad fiber and the fiber end cap. The related splicing methods and crafts were re-searched. For examining the fiber end cap, a high power continuous wave fiber laser system was built. The experiment results indicate that the double-clad fiber with end cap can transmit 507 W power laser steadily and the end surface of the double-clad fiber is not damaged. The efficiency of the laser with end cap is 64 . 05%, and the beam quality of the laser with end cap is same as the la-ser without end cap.