全光纤自混合散斑干涉可行性研究  

Feasibility study of all-fiber self-mixing speckle interference

作　　者：刘盛刚[1,2] 李泽仁[1] 刘乔[1] 

机构地区：[1]中国工程物理研究院流体物理研究所,绵阳621900 [2]中国工程物理研究院研究生部,北京100088

出　　处：《激光技术》2010年第3期316-319,共4页Laser Technology

基　　金：中国工程物理研究院基金资助项目(200880403038)

摘　　要：为了证明光纤传光、光纤自聚焦透镜收集反馈光进行自混合散斑干涉的可行性,建立了自聚焦透镜收集效率的理论模型,重点研究了光纤自聚焦透镜的收集效率随其半径和工作距离的变化关系;从理论上证明了采用光纤传光、光纤自聚焦透镜收集反馈光进行自混合散斑干涉的可行性;最后搭建了实验装置,并进行了实验研究。结果表明,该装置可以获得较好的自混合散斑干涉信号;可以解决自由空间自混合散斑干涉测速系统工具距离短、易受环境干扰等问题。In order to prove the feasibility of using fiber to transmit light and using self-focus lens to collect feedback light, the collection efficiency model of self-focus lens was built, and then much attention was put on how the collection efficiency of the self-focus lenschanges with radius and working distance. The feasibility of using fiber to transmit light and using self-focus lens to collect feedback light is theoretically proved. Finally, the experimental facility was established, the experiments were carried out. The experimental results show that this new instrument can acquire fine signal at long working distance with little disturbance induced by environment.

关 键 词：激光技术 速度测量 自混合散斑干涉 自聚焦透镜 

分 类 号：TN248.4[电子电信—物理电子学]