Stimulated Brillouin Scattering Threshold in Presence of Modulation Instability for Optical Pulse in Long Optical Fiber

被引：1
|
作者：
Hu, Xiaoyang [1 ]
Huang, Qiuyang [1 ]
Lu, Yang [1 ]
Meng, Zhou [1 ]
机构：
[1] Natl Univ Def Technol, Coll Meteorol & Oceanog, Changsha 410073, Peoples R China
来源：
APPLIED SCIENCES-BASEL | 2022年 / 12卷 / 21期
基金：
中国国家自然科学基金;
关键词：
nonlinear fiber optics; stimulated Brillouin scattering; modulation instability;
D O I：
10.3390/app122110868
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A theoretical and experimental study on the stimulated Brillouin scattering (SBS) threshold for optical pulse in the presence of modulation instability (MI) in long optical fiber is presented. The effects of MI on the SBS gain and threshold are analyzed based on the coupled-wave equation. An analytic expression is obtained to calculate the SBS threshold in the presence of MI. Numerical simulation is conducted to study the effects of the repetition rate and amplified spontaneous emission (ASE) noise on the SBS threshold for optical pulses. An experiment is conducted, and the results agree well with the theoretical analysis. The results clearly reveal how MI affects the Brillouin gain and SBS threshold of optical pulses in long optical fiber. The SBS threshold is affected by the ASE noise level and the repetition rate of the optical pulse. The study is helpful for the power evaluation of interferometric fiber sensing systems and optical power transmission systems.
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页数：9
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