基于Fournier-Forand和Henyey-Greenstein体积散射函数的水中光脉冲传输仿真分析  

Simulative Study of Optical Pulse Propagation in Water Based on Fournier-Forand and Henyey-Greenstein Volume Scattering Functions

作　　者：魏安海[1,2] 赵卫[1] 韩彪[1] 谢小平[1,3] 胡辉[1] 苏玉龙[1,2] 

机构地区：[1]中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,陕西西安710119 [2]中国科学院大学,北京100049 [3]西安通信学院,陕西西安710106

出　　处：《光学学报》2013年第6期16-21,共6页Acta Optica Sinica

基　　金：国家自然科学基金(61231012)资助课题

摘　　要：结合Fournier-Forand和Henyey-Greenstein体积散射函数,利用Monte Carlo法建立水中激光脉冲传输特性分析模型。采用该模型分析了散射体相对折射率和尺寸分布对水中光脉冲传输特性的影响。研究表明:光脉冲在水中传输时,随着散射体相对折射率的增大和小尺度散射体相对含量的增加,脉冲展宽增加,光波前向散射减弱且空间分布扩展加剧,到达角分布更离散。与传统水中光脉冲传输仿真模型相比,此模型更加有效。A simulative model with Monte Carlo method is established based on Fournier-Forand and Henyey-Greenstein volume scattering functions, by which propagation characteristics of optical pulse underwater can be analyzed. By using this model, the influence of scattering particles′ relative refractive index and size distribution on optical pulse propagation in water is analyzed. The results show that, with the increase of the relative refractive index of scattering particles and small scattering particles′ relative quantity, the width of optical pulse is broadened more evidently in time domain, the forward scattering becomes weaker with a more disperse space distribution and arrival angles′ distribution. Compared with traditional simulative models, the method presented is more effective.

关 键 词：海洋光学 光脉冲 体积散射函数 MONTE Carlo法 

分 类 号：TN249[电子电信—物理电子学]