【摘要】 考察了高掺铒光纤作为增益介质的DBR型光纤激光器各项性能随光纤长度变化的情况。实验考察掺杂光纤的长度范围为 96.5 -9.5cm ,在可接受的性能指标下 ,得到长度仅为 15cm的光纤激光器。实验结果表明随着光纤长度的缩短 ,激光器的波长稳定性和 3dB、2 5dB带宽仍然保持优异 ,而输出功率的稳定性是最先恶化的指标 ,最大输出功率和斜率效率并不是随掺杂光纤的长度线性变化 ,而是有较长的一段平稳期。本文对制作短腔掺铒光纤激光器有一定的参考价值更多还原

【Abstract】 We have worked on length vary of gain medium’s influence on output performance of a DBR fiber laser utilizing high-doped erbium.We test the erbium-doped fiber from 96.5cm to 9.5cm,and get a only 15cm long fiber laser under a acceptable performance. The experiment shows that the stability of wavelength and 3dB,25dB line width of output laser retain stable with the shorting of the fiber. The stability of output power goes down first while the other characteristics remain stable. After a stable period the max output power and the slope efficiency go down as well. This paper will be a reference to those who want to work on short cavity erbium-doped fiber laser.更多还原