布里渊散射
激光线宽
布里渊区
光学
材料科学
折射率
光纤
光纤激光器
激光器
光电子学
物理
作者
Dongyu He,Meisong Liao,Lili Hu,Chunlei Yu,Yunfeng Qi,Hui Shen,Liang Chen,Qiubai Yang,Meizhong Liu,Meng Wang,Qinling Zhou,Weiqing Gao,Tianxing Wang
出处
期刊:Optics Express
[The Optical Society]
日期:2022-12-13
卷期号:31 (2): 1888-1888
被引量:1
摘要
The Brillouin gain spectrum (BGS) provides key information for stimulated Brillouin scattering (SBS), such as the Brillouin frequency shift (BFS), Brillouin spontaneous linewidth, and Brillouin gain coefficient. In this study, we theoretically investigate the field distributions and BGS characterization of Ge-doped, Al-doped, and Al/Ge co-doped fibers. Additionally, we analyzed and compared the relationship between the BGS and acoustic refractive index. In particular, we demonstrate the crucial role played by acoustic modes in anti-waveguide structures. The simulation results show that the Brillouin gain coefficient decreases with a decreasing acoustic index in the fiber core region. Furthermore, we experimentally measure the SBS threshold and BGS of the Al/Ge co-doped fiber to examine the validity of the numerical model. The simulated and experimental results are consistent.
科研通智能强力驱动
Strongly Powered by AbleSci AI