受激布里渊散射及其在集成化光学陀螺中的应用  

Review on Stimulated Brillouin Scattering Effects and Their Applications in Integrated Optical Gyroscopes

作　　者：柳辰琛 高乘春 杨合 徐小斌[1] 宋凝芳[1] Liu Chenchen;Gao Chengchun;Yang He;Xu Xiaobin;Song Ningfang(School of Instrumentation and Optoelectronic Engineering,Beihang University,Beijing 100191,China)

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191

出　　处：《中国激光》2022年第19期184-198,共15页Chinese Journal of Lasers

基　　金：国防科技重点实验室基金(KZ15-0233-01)。

摘　　要：受激布里渊散射效应是一种典型的三阶光学非线性效应,通过强光激发可以在不同介质中产生。受激布里渊散射激光具有低阈值、超窄线宽、相邻阶散射光相向传播等优异特性,促进其在高分辨率光谱仪、光学传感以及量子计算等领域的广泛应用。布里渊激光输出的光谱线宽超窄且相邻阶光束相向传播,为集成化光学陀螺的构建提供了便利。首先总结了受激布里渊散射效应的产生机理,分析了不同介质中受激布里渊散射光的特性,进而综述了基于微腔结构的布里渊光学陀螺的研究进展,最后对基于布里渊散射效应的集成化光学陀螺的研究前景进行了展望。Significance Stimulated Brillouin scattering(SBS)is a typical third-order optical nonlinear effect describing the coupling between coherent light and phonon,which is the strongest nonlinear effect in the materials.Since the first realization in quartz and sapphire crystals in 1964,more work has been performed to study the SBS in various media,such as optical fibers,optical microcavities,gases and fluids.For the properties of narrow-linewidth and opposite-direction of the light generated by SBS,SBS lasers have many potential applications in the fields of laser,optical sensing,and optoelectronic devices related to fast and slow lights.Optical gyroscope is an all solid-state angular velocity sensor based on the Sagnac effect with the advantages of high precision and high reliability.It has three main categories:ring laser gyroscope(RLG),fiber optical gyroscope(FOG)and micro optical gyroscope(MOG).RLG is sensitive to angular velocity by resonant laser beat frequency detection,which has the advantage of high stability of scale factor,but it has harsh requirements on the fabrication process.Interferometric fiber optical gyroscope(IFOG)owns the advantages of relatively simple structure and easy process,but the scale factor is not as stable as that of RLG.To improve the precision,hundreds or even thousands of kilometers of fiber are required to be accurately wound onto the ring-pillar.After decades of study,RLG and IFOG have been widely used in many optical sensor fields and navigation systems.In recent years,with the rapid development of autonomous driving,unmanned aerial vehicle and satellite platform,the demand for miniaturization and high precision of gyroscope is put forward,while the traditional gyroscope is difficult to meet these new requirements.The sensing element of a resonant optical gyroscope is fiber ring or waveguide resonator.It only needs tens of meters of fiber or an on-chip microcavity with the diameter of millimeters to realize high-precision gyroscope,which is helpful for the miniaturization of the w

关 键 词：散射 受激布里渊散射 布里渊激光器 光学陀螺 微腔 奇异点 

分 类 号：O437.2[机械工程—光学工程]