增益型受激布里渊相移谱宽范围功率特性

发布时间：2018-03-13 05:24

本文选题：受激布里渊散射　切入点：相移谱　出处：《红外与激光工程》2017年01期 　论文类型：期刊论文

【摘要】：相移谱的功率依赖特性对矢量布里渊光时域分析系统的优化设计具有重要意义。对增益型受激布里渊散射(SBS)相移谱进行了建模分析;搭建了外差pump-Stokes系统,在5~90 m W泵浦光功率和5μW~9 m W斯托克斯光功率范围内测量了400 m标准单模光纤的增益型SBS相移谱;分析了Stokes光功率影响增益型SBS相移的机理。结果表明:当固定Stokes光功率时,增益型SBS相移范围与泵浦光功率成良好线性关系;因泵浦耗尽作用的影响,导致当Stokes光功率由5μW上升至8 m W时,增益型SBS相移范围的泵浦光功率灵敏度由1.448(°)/m W下降至1.156(°)/m W。根据理论和实验结果,对增益型VBOTDA系统进行了优化设计分析,为其在长距离和高精度传感领域的发展奠定了基础。
[Abstract]:The power dependence of phase shift spectrum is of great significance to the optimization design of vector Brillouin optical time domain analysis system. The gain stimulated Brillouin scattering (SBS) phase shift spectrum is modeled and analyzed, and the heterodyne pump-Stokes system is built. The gain SBS phase shift spectrum of 400m standard single-mode optical fiber is measured in the range of 590 MW pump power and 5 渭 W 9MW Stokes optical power, and the mechanism of Stokes optical power influencing the gain type SBS phase shift is analyzed. The results show that when the Stokes optical power is fixed, the gain SBS phase shift spectrum is obtained. There is a good linear relationship between the gain SBS phase shift range and the pump power, and because of the effect of pump depletion, the optical power of Stokes increases from 5 渭 W to 8 MW. The pump power sensitivity in the gain SBS phase-shift range is reduced from 1.448 (掳/ m W) to 1.156 (掳/ m W). Based on the theoretical and experimental results, the optimal design and analysis of the gain type VBOTDA system are carried out, which lays a foundation for the development of the gain type VBOTDA system in the field of long distance and high precision sensing.
【作者单位】：华北电力大学电子与通信工程系;
【基金】：国家自然科学基金(61377088) 河北省自然科学基金(F2014502098) 中央高校基本科研业务费专项资金(2015XS114)
【分类号】：TN253;O437.2

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